Finding the Fourth Proportional to 1,131,581.97, 1,561,535.55 and 641,584.44
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Solution
The fourth proportional to 1,131,581.97, 1,561,535.55 and 641,584.44 is: 885,359.56
Step by Step Solution
- Step 1: Write the proportion equation
1,131,581.97 : 1,561,535.55 = 641,584.44 : x - Step 2: Convert to fraction form
1,131,581.97/1,561,535.55 = 641,584.44/x - Step 3: Cross multiply
1,131,581.97x = 1,561,535.55 × 641,584.44 - Step 4: Simplify right side
1,131,581.97x = 1,001,856,911,386.84 - Step 5: Solve for x
x = 1,001,856,911,386.84/1,131,581.97 - Step 6: Final answer
x = 885,359.56
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1.5x scale
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.