Finding the Fourth Proportional to 861,305.18, 1,291,089.29 and 541,685.45
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Solution
The fourth proportional to 861,305.18, 1,291,089.29 and 541,685.45 is: 811,981.98
Step by Step Solution
- Step 1: Write the proportion equation
861,305.18 : 1,291,089.29 = 541,685.45 : x - Step 2: Convert to fraction form
861,305.18/1,291,089.29 = 541,685.45/x - Step 3: Cross multiply
861,305.18x = 1,291,089.29 × 541,685.45 - Step 4: Simplify right side
861,305.18x = 699,364,283,563.13 - Step 5: Solve for x
x = 699,364,283,563.13/861,305.18 - Step 6: Final answer
x = 811,981.98
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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.