Finding the Fourth Proportional to 690,711.24, 1,036,206.96 and 217,286.49
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Solution
The fourth proportional to 690,711.24, 1,036,206.96 and 217,286.49 is: 325,973.81
Step by Step Solution
- Step 1: Write the proportion equation
690,711.24 : 1,036,206.96 = 217,286.49 : x - Step 2: Convert to fraction form
690,711.24/1,036,206.96 = 217,286.49/x - Step 3: Cross multiply
690,711.24x = 1,036,206.96 × 217,286.49 - Step 4: Simplify right side
690,711.24x = 225,153,773,251.97 - Step 5: Solve for x
x = 225,153,773,251.97/690,711.24 - Step 6: Final answer
x = 325,973.81
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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.