Finding the Fourth Proportional to 690,717.24, 1,036,215.96 and 217,292.49
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Solution
The fourth proportional to 690,717.24, 1,036,215.96 and 217,292.49 is: 325,982.81
Step by Step Solution
- Step 1: Write the proportion equation
690,717.24 : 1,036,215.96 = 217,292.49 : x - Step 2: Convert to fraction form
690,717.24/1,036,215.96 = 217,292.49/x - Step 3: Cross multiply
690,717.24x = 1,036,215.96 × 217,292.49 - Step 4: Simplify right side
690,717.24x = 225,161,946,126.14 - Step 5: Solve for x
x = 225,161,946,126.14/690,717.24 - Step 6: Final answer
x = 325,982.81
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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.