Finding the Fourth Proportional to 3,987,639,263.80, 5,981,458,895.70 and 2,681,569,862.20
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Solution
The fourth proportional to 3,987,639,263.80, 5,981,458,895.70 and 2,681,569,862.20 is: 4,022,354,793.30
Step by Step Solution
- Step 1: Write the proportion equation
3,987,639,263.80 : 5,981,458,895.70 = 2,681,569,862.20 : x - Step 2: Convert to fraction form
3,987,639,263.80/5,981,458,895.70 = 2,681,569,862.20/x - Step 3: Cross multiply
3,987,639,263.80x = 5,981,458,895.70 × 2,681,569,862.20 - Step 4: Simplify right side
3,987,639,263.80x = 16,039,699,906,697,211,904 - Step 5: Solve for x
x = 16,039,699,906,697,211,904/3,987,639,263.80 - Step 6: Final answer
x = 4,022,354,793.30
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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.