Finding the Fourth Proportional to 687,186.68, 948,285.47 and 381,259.80
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Solution
The fourth proportional to 687,186.68, 948,285.47 and 381,259.80 is: 526,120.69
Step by Step Solution
- Step 1: Write the proportion equation
687,186.68 : 948,285.47 = 381,259.80 : x - Step 2: Convert to fraction form
687,186.68/948,285.47 = 381,259.80/x - Step 3: Cross multiply
687,186.68x = 948,285.47 × 381,259.80 - Step 4: Simplify right side
687,186.68x = 361,543,126,728.81 - Step 5: Solve for x
x = 361,543,126,728.81/687,186.68 - Step 6: Final answer
x = 526,120.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.