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Finding the Fourth Proportional to 414,757.87, 621,503.03 and 279,321.15

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Solution

The fourth proportional to 414,757.87, 621,503.03 and 279,321.15 is: 418,554.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,757.87 : 621,503.03 = 279,321.15 : x
  2. Step 2: Convert to fraction form
    414,757.87/621,503.03 = 279,321.15/x
  3. Step 3: Cross multiply
    414,757.87x = 621,503.03 × 279,321.15
  4. Step 4: Simplify right side
    414,757.87x = 173,598,942,088.85
  5. Step 5: Solve for x
    x = 173,598,942,088.85/414,757.87
  6. Step 6: Final answer
    x = 418,554.91

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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.