Finding the Fourth Proportional to 862,132.10, 1,189,778.97 and 480,158.87
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Solution
The fourth proportional to 862,132.10, 1,189,778.97 and 480,158.87 is: 662,639.66
Step by Step Solution
- Step 1: Write the proportion equation
862,132.10 : 1,189,778.97 = 480,158.87 : x - Step 2: Convert to fraction form
862,132.10/1,189,778.97 = 480,158.87/x - Step 3: Cross multiply
862,132.10x = 1,189,778.97 × 480,158.87 - Step 4: Simplify right side
862,132.10x = 571,282,919,836.07 - Step 5: Solve for x
x = 571,282,919,836.07/862,132.10 - Step 6: Final answer
x = 662,639.66
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1.5x scale
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.