Finding the Fourth Proportional to 574,520,251.20, 861,780,376.80 and 399,168,340.80
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Solution
The fourth proportional to 574,520,251.20, 861,780,376.80 and 399,168,340.80 is: 598,752,511.20
Step by Step Solution
- Step 1: Write the proportion equation
574,520,251.20 : 861,780,376.80 = 399,168,340.80 : x - Step 2: Convert to fraction form
574,520,251.20/861,780,376.80 = 399,168,340.80/x - Step 3: Cross multiply
574,520,251.20x = 861,780,376.80 × 399,168,340.80 - Step 4: Simplify right side
574,520,251.20x = 343,995,443,141,254,784 - Step 5: Solve for x
x = 343,995,443,141,254,784/574,520,251.20 - Step 6: Final answer
x = 598,752,511.20
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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.