Finding the Fourth Proportional to 3,987,638,863.30, 5,981,458,294.95 and 2,681,569,461.70
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Solution
The fourth proportional to 3,987,638,863.30, 5,981,458,294.95 and 2,681,569,461.70 is: 4,022,354,192.55
Step by Step Solution
- Step 1: Write the proportion equation
3,987,638,863.30 : 5,981,458,294.95 = 2,681,569,461.70 : x - Step 2: Convert to fraction form
3,987,638,863.30/5,981,458,294.95 = 2,681,569,461.70/x - Step 3: Cross multiply
3,987,638,863.30x = 5,981,458,294.95 × 2,681,569,461.70 - Step 4: Simplify right side
3,987,638,863.30x = 16,039,695,900,170,070,016 - Step 5: Solve for x
x = 16,039,695,900,170,070,016/3,987,638,863.30 - Step 6: Final answer
x = 4,022,354,192.55
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1.5x scale
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.