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Finding the Fourth Proportional to 817,873.20, 1,227,004.20 and 344,314.80

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Solution

The fourth proportional to 817,873.20, 1,227,004.20 and 344,314.80 is: 516,554.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,873.20 : 1,227,004.20 = 344,314.80 : x
  2. Step 2: Convert to fraction form
    817,873.20/1,227,004.20 = 344,314.80/x
  3. Step 3: Cross multiply
    817,873.20x = 1,227,004.20 × 344,314.80
  4. Step 4: Simplify right side
    817,873.20x = 422,475,705,722.16
  5. Step 5: Solve for x
    x = 422,475,705,722.16/817,873.20
  6. Step 6: Final answer
    x = 516,554.04

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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.