Finding the Fourth Proportional to 718,580.52, 991,686.60 and 396,291.24
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Solution
The fourth proportional to 718,580.52, 991,686.60 and 396,291.24 is: 546,906.99
Step by Step Solution
- Step 1: Write the proportion equation
718,580.52 : 991,686.60 = 396,291.24 : x - Step 2: Convert to fraction form
718,580.52/991,686.60 = 396,291.24/x - Step 3: Cross multiply
718,580.52x = 991,686.60 × 396,291.24 - Step 4: Simplify right side
718,580.52x = 392,996,712,405.38 - Step 5: Solve for x
x = 392,996,712,405.38/718,580.52 - Step 6: Final answer
x = 546,906.99
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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.