Finding the Fourth Proportional to 861,387.19, 1,292,198.99 and 292,615.61
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Solution
The fourth proportional to 861,387.19, 1,292,198.99 and 292,615.61 is: 438,963.57
Step by Step Solution
- Step 1: Write the proportion equation
861,387.19 : 1,292,198.99 = 292,615.61 : x - Step 2: Convert to fraction form
861,387.19/1,292,198.99 = 292,615.61/x - Step 3: Cross multiply
861,387.19x = 1,292,198.99 × 292,615.61 - Step 4: Simplify right side
861,387.19x = 378,117,595,700.23 - Step 5: Solve for x
x = 378,117,595,700.23/861,387.19 - Step 6: Final answer
x = 438,963.57
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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.