Finding the Fourth Proportional to 1,981,879.62, 2,735,029.92 and 1,122,618.30
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Solution
The fourth proportional to 1,981,879.62, 2,735,029.92 and 1,122,618.30 is: 1,549,233.67
Step by Step Solution
- Step 1: Write the proportion equation
1,981,879.62 : 2,735,029.92 = 1,122,618.30 : x - Step 2: Convert to fraction form
1,981,879.62/2,735,029.92 = 1,122,618.30/x - Step 3: Cross multiply
1,981,879.62x = 2,735,029.92 × 1,122,618.30 - Step 4: Simplify right side
1,981,879.62x = 3,070,394,639,239.54 - Step 5: Solve for x
x = 3,070,394,639,239.54/1,981,879.62 - Step 6: Final answer
x = 1,549,233.67
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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.