Finding the Fourth Proportional to 1,561,691.78, 2,155,244.49 and 873,427.70
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Solution
The fourth proportional to 1,561,691.78, 2,155,244.49 and 873,427.70 is: 1,205,391.65
Step by Step Solution
- Step 1: Write the proportion equation
1,561,691.78 : 2,155,244.49 = 873,427.70 : x - Step 2: Convert to fraction form
1,561,691.78/2,155,244.49 = 873,427.70/x - Step 3: Cross multiply
1,561,691.78x = 2,155,244.49 × 873,427.70 - Step 4: Simplify right side
1,561,691.78x = 1,882,450,231,757.15 - Step 5: Solve for x
x = 1,882,450,231,757.15/1,561,691.78 - Step 6: Final answer
x = 1,205,391.65
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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.