Finding the Fourth Proportional to 598,841.20, 898,261.80 and 431,535.70
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Solution
The fourth proportional to 598,841.20, 898,261.80 and 431,535.70 is: 647,303.55
Step by Step Solution
- Step 1: Write the proportion equation
598,841.20 : 898,261.80 = 431,535.70 : x - Step 2: Convert to fraction form
598,841.20/898,261.80 = 431,535.70/x - Step 3: Cross multiply
598,841.20x = 898,261.80 × 431,535.70 - Step 4: Simplify right side
598,841.20x = 387,632,034,646.26 - Step 5: Solve for x
x = 387,632,034,646.26/598,841.20 - Step 6: Final answer
x = 647,303.55
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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.