Finding the Fourth Proportional to 472,829,687.80, 709,244,531.70 and 291,431,159.80
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Solution
The fourth proportional to 472,829,687.80, 709,244,531.70 and 291,431,159.80 is: 437,146,739.70
Step by Step Solution
- Step 1: Write the proportion equation
472,829,687.80 : 709,244,531.70 = 291,431,159.80 : x - Step 2: Convert to fraction form
472,829,687.80/709,244,531.70 = 291,431,159.80/x - Step 3: Cross multiply
472,829,687.80x = 709,244,531.70 × 291,431,159.80 - Step 4: Simplify right side
472,829,687.80x = 206,695,956,455,138,880 - Step 5: Solve for x
x = 206,695,956,455,138,880/472,829,687.80 - Step 6: Final answer
x = 437,146,739.70
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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.