You should be highly skeptical of any and all getrich schemes  except for the supersimple formula I'm going to show you below. Because this one really works.
It works so well that it has been used by the world's billionaires  from moguls of yesteryear such as Rockefeller and Ford to today's tycoons, Carlos Slim Helu and Warren Buffett.
But enough already. Let's get to the formula.
The formula
It is, simply:
FV = PV * (1+r) ^ n
Where:
FV = future value
PV = present value
r = rate of return
n = time (or number of years)
Compounding 101
Now, some astute finance brains will know that equation not as some mystical secret but as the "future value of money" (FVM) equation taught in college.
The FVM formula simply states that your future wealth (FV) is a function of three variables: the amount of money invested today (PV), the rate of return generated (r), and the length of time in which that money is put to work (n). So maximizing future riches requires three steps.
Step 1: Increase
PV
It takes money to make money. But by actively and consistently slivering off a portion of your earnings every month to save and invest, you'll have more and more of that money working for you.
All things equal, the greater the amount you invest today (PV), the greater wealth you'll build for tomorrow (FV).
Step 2: Increase r
Next, you'll need a way to grow that capital. Historically, the stock market has been the most effective wealthbuilding vehicle of all. Plowing your money into a lowcost index fund wouldn't be a bad idea.
But if you really want to maximize r, you'll need to allocate a portion of your portfolio to the best segment of the market over the past 50 years: smallcap value stocks. The reason is simple. Unlike behemoths such as $380 billion General Electric and $145 billion Pfizer
Value 
Growth 


Large caps 
13.3% 
9.7% 
Small caps 
17.3% 
8.7% 
Total stock market 
10.5% 
Not adjusted for inflation.
All things equal, the greater your rate of return (r), the greater wealth you'll build for tomorrow (FV).
Step 3: Increase
n
The last ingredient in our supersimple wealthbuilding recipe: maximum time in the market.
Look back at the equation. You'll see that n is an exponential function  meaning that for every year you're not invested, you give up the awesome (almost magical) benefits of compounding.
All things equal, the longer you're invested (n), the greater wealth you'll build for tomorrow (FV).
Plug and chug
To get a feel for the threestep process in action, let's go back in time to see what kind of wealth would have been generated had someone:
 1. Invested $40,000 in the stock market
 2. Started 10 years ago
 3. Divided the money among five stocks having: market caps less than $2 billion (to screen for small size), sales growth greater than 15% (to screen for aboveaverage opportunities), and pricetosales ratios of less than 1.5 (to screen for a good price).
Here's what it would look like:
Company 
Amount invested 10 years ago 
Average compounded return over last 10 years 
Total value of investment today 

CarMax 
$8,000 
12.74% 
$26,549 
Activision 
$8,000 
30.92% 
$118,323 
Precision Castparts 
$8,000 
22.32% 
$59,986 
Exponent 
$8,000 
20.71% 
$52,553 
Dawson
Geophysical 
$8,000 
16.19% 
$35,886 
Total amount invested (PV) 
Avg. annual return of portfolio (r) 
Total value of portfolio today (FV) 

$40,000 
22.05% 
$293,297 
By having bought into five highquality, reasonably priced companies while they were still babies, that $40,000 stake would be worth nearly $300,000 today.
Of course, you can always fiddle with the numbers to generate different levels of FV, but our objective should remain the same:
 1. Maximize PV by sticking to an investment plan.
 2. Maximize r by devoting a chunk of your portfolio to superior small caps at attractive prices.
 3. Maximize n by investing as soon as possible and for as long as possible.
The final Foolish variable
So don't waste another "n." Start plugging whopping returns into your own reallife wealth equation today.
If you need a few smallcap ideas to start you off, our specialists at Motley Fool Hidden Gems can help. Advisors Bill Mann and Seth Jayson make sure subscribers get the absolute most from the FVM formula. Since the newsletter's inception in 2003, the picks are up an average of 35%, versus 10% for like amounts invested in the S&P 500. You can see their five favorite small caps for new money with a free, 30day trial. To learn more, click here.
This article was first published Oct. 12, 2007. It has been updated.
Fool contributor Brian Pacampara tried to get rich quick once, but his idea for a coldair balloon never got off the ground. He owns no position in any of the companies mentioned. Pfizer and CarMax are Inside Value recommendations. Pfizer is also an Income Investor choice. Dawson Geophysical is a Hidden Gems pick. Activision was singled out by Stock Advisor. The Fool has a mathematical disclosure policy.