Finding the Fourth Proportional to 861,705.43, 1,291,754.26 and 292,697.23
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Solution
The fourth proportional to 861,705.43, 1,291,754.26 and 292,697.23 is: 438,772.79
Step by Step Solution
- Step 1: Write the proportion equation
861,705.43 : 1,291,754.26 = 292,697.23 : x - Step 2: Convert to fraction form
861,705.43/1,291,754.26 = 292,697.23/x - Step 3: Cross multiply
861,705.43x = 1,291,754.26 × 292,697.23 - Step 4: Simplify right side
861,705.43x = 378,092,893,742.70 - Step 5: Solve for x
x = 378,092,893,742.70/861,705.43 - Step 6: Final answer
x = 438,772.79
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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.