Finding the Fourth Proportional to 425,718,063.20, 638,577,094.80 and 418,543,609.70
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Solution
The fourth proportional to 425,718,063.20, 638,577,094.80 and 418,543,609.70 is: 627,815,414.55
Step by Step Solution
- Step 1: Write the proportion equation
425,718,063.20 : 638,577,094.80 = 418,543,609.70 : x - Step 2: Convert to fraction form
425,718,063.20/638,577,094.80 = 418,543,609.70/x - Step 3: Cross multiply
425,718,063.20x = 638,577,094.80 × 418,543,609.70 - Step 4: Simplify right side
425,718,063.20x = 267,272,362,329,331,072 - Step 5: Solve for x
x = 267,272,362,329,331,072/425,718,063.20 - Step 6: Final answer
x = 627,815,414.55
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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.