Finding the Fourth Proportional to 3,998,366.88, 5,517,878.80 and 2,187,531.68
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Solution
The fourth proportional to 3,998,366.88, 5,517,878.80 and 2,187,531.68 is: 3,018,866.21
Step by Step Solution
- Step 1: Write the proportion equation
3,998,366.88 : 5,517,878.80 = 2,187,531.68 : x - Step 2: Convert to fraction form
3,998,366.88/5,517,878.80 = 2,187,531.68/x - Step 3: Cross multiply
3,998,366.88x = 5,517,878.80 × 2,187,531.68 - Step 4: Simplify right side
3,998,366.88x = 12,070,534,681,400.38 - Step 5: Solve for x
x = 12,070,534,681,400.38/3,998,366.88 - Step 6: Final answer
x = 3,018,866.21
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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.