Finding the Fourth Proportional to 3,987,638,891.30, 5,981,458,336.95 and 2,681,569,489.70
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Solution
The fourth proportional to 3,987,638,891.30, 5,981,458,336.95 and 2,681,569,489.70 is: 4,022,354,234.55
Step by Step Solution
- Step 1: Write the proportion equation
3,987,638,891.30 : 5,981,458,336.95 = 2,681,569,489.70 : x - Step 2: Convert to fraction form
3,987,638,891.30/5,981,458,336.95 = 2,681,569,489.70/x - Step 3: Cross multiply
3,987,638,891.30x = 5,981,458,336.95 × 2,681,569,489.70 - Step 4: Simplify right side
3,987,638,891.30x = 16,039,696,180,276,819,968 - Step 5: Solve for x
x = 16,039,696,180,276,819,968/3,987,638,891.30 - Step 6: Final answer
x = 4,022,354,234.55
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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.