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Finding the Fourth Proportional to 617,920.80, 927,226.80 and 262,874.40

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Solution

The fourth proportional to 617,920.80, 927,226.80 and 262,874.40 is: 394,458.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,920.80 : 927,226.80 = 262,874.40 : x
  2. Step 2: Convert to fraction form
    617,920.80/927,226.80 = 262,874.40/x
  3. Step 3: Cross multiply
    617,920.80x = 927,226.80 × 262,874.40
  4. Step 4: Simplify right side
    617,920.80x = 243,744,188,713.92
  5. Step 5: Solve for x
    x = 243,744,188,713.92/617,920.80
  6. Step 6: Final answer
    x = 394,458.62

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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.