Finding the Fourth Proportional to 725,132.16, 1,086,778.08 and 409,765.68
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Solution
The fourth proportional to 725,132.16, 1,086,778.08 and 409,765.68 is: 614,128.55
Step by Step Solution
- Step 1: Write the proportion equation
725,132.16 : 1,086,778.08 = 409,765.68 : x - Step 2: Convert to fraction form
725,132.16/1,086,778.08 = 409,765.68/x - Step 3: Cross multiply
725,132.16x = 1,086,778.08 × 409,765.68 - Step 4: Simplify right side
725,132.16x = 445,324,358,960.29 - Step 5: Solve for x
x = 445,324,358,960.29/725,132.16 - Step 6: Final answer
x = 614,128.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.