Finding the Fourth Proportional to 409,432.80, 614,149.20 and 372,691.20
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Solution
The fourth proportional to 409,432.80, 614,149.20 and 372,691.20 is: 559,036.80
Step by Step Solution
- Step 1: Write the proportion equation
409,432.80 : 614,149.20 = 372,691.20 : x - Step 2: Convert to fraction form
409,432.80/614,149.20 = 372,691.20/x - Step 3: Cross multiply
409,432.80x = 614,149.20 × 372,691.20 - Step 4: Simplify right side
409,432.80x = 228,888,002,327.04 - Step 5: Solve for x
x = 228,888,002,327.04/409,432.80 - Step 6: Final answer
x = 559,036.80
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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.