Finding the Fourth Proportional to 681,859.62, 1,022,936.91 and 261,135.54
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Solution
The fourth proportional to 681,859.62, 1,022,936.91 and 261,135.54 is: 391,759.79
Step by Step Solution
- Step 1: Write the proportion equation
681,859.62 : 1,022,936.91 = 261,135.54 : x - Step 2: Convert to fraction form
681,859.62/1,022,936.91 = 261,135.54/x - Step 3: Cross multiply
681,859.62x = 1,022,936.91 × 261,135.54 - Step 4: Simplify right side
681,859.62x = 267,125,182,378.78 - Step 5: Solve for x
x = 267,125,182,378.78/681,859.62 - Step 6: Final answer
x = 391,759.79
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1.5x scale
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.