Finding the Fourth Proportional to 716,441.99, 988,689.95 and 394,145.17
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Solution
The fourth proportional to 716,441.99, 988,689.95 and 394,145.17 is: 543,920.33
Step by Step Solution
- Step 1: Write the proportion equation
716,441.99 : 988,689.95 = 394,145.17 : x - Step 2: Convert to fraction form
716,441.99/988,689.95 = 394,145.17/x - Step 3: Cross multiply
716,441.99x = 988,689.95 × 394,145.17 - Step 4: Simplify right side
716,441.99x = 389,687,361,505.87 - Step 5: Solve for x
x = 389,687,361,505.87/716,441.99 - Step 6: Final answer
x = 543,920.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.