Finding the Fourth Proportional to 810,397.99, 1,215,648.83 and 311,761.99
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Solution
The fourth proportional to 810,397.99, 1,215,648.83 and 311,761.99 is: 467,662.93
Step by Step Solution
- Step 1: Write the proportion equation
810,397.99 : 1,215,648.83 = 311,761.99 : x - Step 2: Convert to fraction form
810,397.99/1,215,648.83 = 311,761.99/x - Step 3: Cross multiply
810,397.99x = 1,215,648.83 × 311,761.99 - Step 4: Simplify right side
810,397.99x = 378,993,098,381.97 - Step 5: Solve for x
x = 378,993,098,381.97/810,397.99 - Step 6: Final answer
x = 467,662.93
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.