Finding the Fourth Proportional to 819,972.18, 1,229,839.35 and 314,660.36
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Solution
The fourth proportional to 819,972.18, 1,229,839.35 and 314,660.36 is: 471,944.90
Step by Step Solution
- Step 1: Write the proportion equation
819,972.18 : 1,229,839.35 = 314,660.36 : x - Step 2: Convert to fraction form
819,972.18/1,229,839.35 = 314,660.36/x - Step 3: Cross multiply
819,972.18x = 1,229,839.35 × 314,660.36 - Step 4: Simplify right side
819,972.18x = 386,981,686,463.97 - Step 5: Solve for x
x = 386,981,686,463.97/819,972.18 - Step 6: Final answer
x = 471,944.90
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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.