Finding the Fourth Proportional to 862,448,956.62, 1,190,179,565.60 and 491,205,531.66
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Solution
The fourth proportional to 862,448,956.62, 1,190,179,565.60 and 491,205,531.66 is: 677,863,636.80
Step by Step Solution
- Step 1: Write the proportion equation
862,448,956.62 : 1,190,179,565.60 = 491,205,531.66 : x - Step 2: Convert to fraction form
862,448,956.62/1,190,179,565.60 = 491,205,531.66/x - Step 3: Cross multiply
862,448,956.62x = 1,190,179,565.60 × 491,205,531.66 - Step 4: Simplify right side
862,448,956.62x = 584,622,786,288,959,872 - Step 5: Solve for x
x = 584,622,786,288,959,872/862,448,956.62 - Step 6: Final answer
x = 677,863,636.80
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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.