Finding the Fourth Proportional to 478,491,042.80, 660,318,226.80 and 258,474,468.80
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Solution
The fourth proportional to 478,491,042.80, 660,318,226.80 and 258,474,468.80 is: 356,695,084.43
Step by Step Solution
- Step 1: Write the proportion equation
478,491,042.80 : 660,318,226.80 = 258,474,468.80 : x - Step 2: Convert to fraction form
478,491,042.80/660,318,226.80 = 258,474,468.80/x - Step 3: Cross multiply
478,491,042.80x = 660,318,226.80 × 258,474,468.80 - Step 4: Simplify right side
478,491,042.80x = 170,675,402,911,087,904 - Step 5: Solve for x
x = 170,675,402,911,087,904/478,491,042.80 - Step 6: Final answer
x = 356,695,084.43
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.