Finding the Fourth Proportional to 1,253,130.74, 1,730,103.36 and 861,338.19
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Solution
The fourth proportional to 1,253,130.74, 1,730,103.36 and 861,338.19 is: 1,189,184.85
Step by Step Solution
- Step 1: Write the proportion equation
1,253,130.74 : 1,730,103.36 = 861,338.19 : x - Step 2: Convert to fraction form
1,253,130.74/1,730,103.36 = 861,338.19/x - Step 3: Cross multiply
1,253,130.74x = 1,730,103.36 × 861,338.19 - Step 4: Simplify right side
1,253,130.74x = 1,490,204,096,615.32 - Step 5: Solve for x
x = 1,490,204,096,615.32/1,253,130.74 - Step 6: Final answer
x = 1,189,184.85
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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.