Finding the Fourth Proportional to 687,187.84, 948,287.09 and 381,260.96
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Solution
The fourth proportional to 687,187.84, 948,287.09 and 381,260.96 is: 526,122.31
Step by Step Solution
- Step 1: Write the proportion equation
687,187.84 : 948,287.09 = 381,260.96 : x - Step 2: Convert to fraction form
687,187.84/948,287.09 = 381,260.96/x - Step 3: Cross multiply
687,187.84x = 948,287.09 × 381,260.96 - Step 4: Simplify right side
687,187.84x = 361,544,850,318.62 - Step 5: Solve for x
x = 361,544,850,318.62/687,187.84 - Step 6: Final answer
x = 526,122.31
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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.