Finding the Fourth Proportional to 3,981,981.28, 5,972,976.24 and 990,165.28
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Solution
The fourth proportional to 3,981,981.28, 5,972,976.24 and 990,165.28 is: 1,485,248.99
Step by Step Solution
- Step 1: Write the proportion equation
3,981,981.28 : 5,972,976.24 = 990,165.28 : x - Step 2: Convert to fraction form
3,981,981.28/5,972,976.24 = 990,165.28/x - Step 3: Cross multiply
3,981,981.28x = 5,972,976.24 × 990,165.28 - Step 4: Simplify right side
3,981,981.28x = 5,914,233,691,112.95 - Step 5: Solve for x
x = 5,914,233,691,112.95/3,981,981.28 - Step 6: Final answer
x = 1,485,248.99
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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.