Finding the Fourth Proportional to 518,612,213.34, 715,690,405.89 and 283,657,849.79
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Solution
The fourth proportional to 518,612,213.34, 715,690,405.89 and 283,657,849.79 is: 391,450,869.12
Step by Step Solution
- Step 1: Write the proportion equation
518,612,213.34 : 715,690,405.89 = 283,657,849.79 : x - Step 2: Convert to fraction form
518,612,213.34/715,690,405.89 = 283,657,849.79/x - Step 3: Cross multiply
518,612,213.34x = 715,690,405.89 × 283,657,849.79 - Step 4: Simplify right side
518,612,213.34x = 203,011,201,646,511,328 - Step 5: Solve for x
x = 203,011,201,646,511,328/518,612,213.34 - Step 6: Final answer
x = 391,450,869.12
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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.