Finding the Fourth Proportional to 1,981,642.19, 2,734,834.88 and 1,122,355.31
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Solution
The fourth proportional to 1,981,642.19, 2,734,834.88 and 1,122,355.31 is: 1,548,945.85
Step by Step Solution
- Step 1: Write the proportion equation
1,981,642.19 : 2,734,834.88 = 1,122,355.31 : x - Step 2: Convert to fraction form
1,981,642.19/2,734,834.88 = 1,122,355.31/x - Step 3: Cross multiply
1,981,642.19x = 2,734,834.88 × 1,122,355.31 - Step 4: Simplify right side
1,981,642.19x = 3,069,456,449,541.21 - Step 5: Solve for x
x = 3,069,456,449,541.21/1,981,642.19 - Step 6: Final answer
x = 1,548,945.85
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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.