Finding the Fourth Proportional to 3,932,267,839.12, 5,427,822,821.26 and 3,129,967,013.65
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Solution
The fourth proportional to 3,932,267,839.12, 5,427,822,821.26 and 3,129,967,013.65 is: 4,320,383,829.78
Step by Step Solution
- Step 1: Write the proportion equation
3,932,267,839.12 : 5,427,822,821.26 = 3,129,967,013.65 : x - Step 2: Convert to fraction form
3,932,267,839.12/5,427,822,821.26 = 3,129,967,013.65/x - Step 3: Cross multiply
3,932,267,839.12x = 5,427,822,821.26 × 3,129,967,013.65 - Step 4: Simplify right side
3,932,267,839.12x = 16,988,906,386,480,480,256 - Step 5: Solve for x
x = 16,988,906,386,480,480,256/3,932,267,839.12 - Step 6: Final answer
x = 4,320,383,829.78
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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.