Finding the Fourth Proportional to 690,711.23, 1,036,206.96 and 217,286.48
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Solution
The fourth proportional to 690,711.23, 1,036,206.96 and 217,286.48 is: 325,973.79
Step by Step Solution
- Step 1: Write the proportion equation
690,711.23 : 1,036,206.96 = 217,286.48 : x - Step 2: Convert to fraction form
690,711.23/1,036,206.96 = 217,286.48/x - Step 3: Cross multiply
690,711.23x = 1,036,206.96 × 217,286.48 - Step 4: Simplify right side
690,711.23x = 225,153,757,708.87 - Step 5: Solve for x
x = 225,153,757,708.87/690,711.23 - Step 6: Final answer
x = 325,973.79
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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.