Finding the Fourth Proportional to 747,229.20, 1,119,612.60 and 431,134.80
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Solution
The fourth proportional to 747,229.20, 1,119,612.60 and 431,134.80 is: 645,991.82
Step by Step Solution
- Step 1: Write the proportion equation
747,229.20 : 1,119,612.60 = 431,134.80 : x - Step 2: Convert to fraction form
747,229.20/1,119,612.60 = 431,134.80/x - Step 3: Cross multiply
747,229.20x = 1,119,612.60 × 431,134.80 - Step 4: Simplify right side
747,229.20x = 482,703,954,378.48 - Step 5: Solve for x
x = 482,703,954,378.48/747,229.20 - Step 6: Final answer
x = 645,991.82
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1.5x scale
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.