Finding the Fourth Proportional to 1,253,132.74, 1,730,106.12 and 861,340.20
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Solution
The fourth proportional to 1,253,132.74, 1,730,106.12 and 861,340.20 is: 1,189,187.63
Step by Step Solution
- Step 1: Write the proportion equation
1,253,132.74 : 1,730,106.12 = 861,340.20 : x - Step 2: Convert to fraction form
1,253,132.74/1,730,106.12 = 861,340.20/x - Step 3: Cross multiply
1,253,132.74x = 1,730,106.12 × 861,340.20 - Step 4: Simplify right side
1,253,132.74x = 1,490,209,951,422.02 - Step 5: Solve for x
x = 1,490,209,951,422.02/1,253,132.74 - Step 6: Final answer
x = 1,189,187.63
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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.