Finding the Fourth Proportional to 821,174.70, 1,229,688.45 and 655,286.70
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Solution
The fourth proportional to 821,174.70, 1,229,688.45 and 655,286.70 is: 981,275.34
Step by Step Solution
- Step 1: Write the proportion equation
821,174.70 : 1,229,688.45 = 655,286.70 : x - Step 2: Convert to fraction form
821,174.70/1,229,688.45 = 655,286.70/x - Step 3: Cross multiply
821,174.70x = 1,229,688.45 × 655,286.70 - Step 4: Simplify right side
821,174.70x = 805,798,486,428.62 - Step 5: Solve for x
x = 805,798,486,428.62/821,174.70 - Step 6: Final answer
x = 981,275.34
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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.