Finding the Fourth Proportional to 477,944,578.20, 716,916,867.30 and 329,991,403.80
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Solution
The fourth proportional to 477,944,578.20, 716,916,867.30 and 329,991,403.80 is: 494,987,105.70
Step by Step Solution
- Step 1: Write the proportion equation
477,944,578.20 : 716,916,867.30 = 329,991,403.80 : x - Step 2: Convert to fraction form
477,944,578.20/716,916,867.30 = 329,991,403.80/x - Step 3: Cross multiply
477,944,578.20x = 716,916,867.30 × 329,991,403.80 - Step 4: Simplify right side
477,944,578.20x = 236,576,403,448,225,312 - Step 5: Solve for x
x = 236,576,403,448,225,312/477,944,578.20 - Step 6: Final answer
x = 494,987,105.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.