Finding the Fourth Proportional to 690,717.95, 1,036,217.05 and 217,293.20
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Solution
The fourth proportional to 690,717.95, 1,036,217.05 and 217,293.20 is: 325,983.88
Step by Step Solution
- Step 1: Write the proportion equation
690,717.95 : 1,036,217.05 = 217,293.20 : x - Step 2: Convert to fraction form
690,717.95/1,036,217.05 = 217,293.20/x - Step 3: Cross multiply
690,717.95x = 1,036,217.05 × 217,293.20 - Step 4: Simplify right side
690,717.95x = 225,162,918,689.06 - Step 5: Solve for x
x = 225,162,918,689.06/690,717.95 - Step 6: Final answer
x = 325,983.88
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1.5x scale
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.