Finding the Fourth Proportional to 861,874.20, 1,292,811.84 and 412,489.44
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Solution
The fourth proportional to 861,874.20, 1,292,811.84 and 412,489.44 is: 618,734.42
Step by Step Solution
- Step 1: Write the proportion equation
861,874.20 : 1,292,811.84 = 412,489.44 : x - Step 2: Convert to fraction form
861,874.20/1,292,811.84 = 412,489.44/x - Step 3: Cross multiply
861,874.20x = 1,292,811.84 × 412,489.44 - Step 4: Simplify right side
861,874.20x = 533,271,231,906.97 - Step 5: Solve for x
x = 533,271,231,906.97/861,874.20 - Step 6: Final answer
x = 618,734.42
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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.