Finding the Fourth Proportional to 1,981,278.06, 2,734,165.35 and 1,121,839.68
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Solution
The fourth proportional to 1,981,278.06, 2,734,165.35 and 1,121,839.68 is: 1,548,139.68
Step by Step Solution
- Step 1: Write the proportion equation
1,981,278.06 : 2,734,165.35 = 1,121,839.68 : x - Step 2: Convert to fraction form
1,981,278.06/2,734,165.35 = 1,121,839.68/x - Step 3: Cross multiply
1,981,278.06x = 2,734,165.35 × 1,121,839.68 - Step 4: Simplify right side
1,981,278.06x = 3,067,295,181,311.09 - Step 5: Solve for x
x = 3,067,295,181,311.09/1,981,278.06 - Step 6: Final answer
x = 1,548,139.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.