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Finding the Fourth Proportional to 617,793.70, 926,690.55 and 485,083.30

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Solution

The fourth proportional to 617,793.70, 926,690.55 and 485,083.30 is: 727,624.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,793.70 : 926,690.55 = 485,083.30 : x
  2. Step 2: Convert to fraction form
    617,793.70/926,690.55 = 485,083.30/x
  3. Step 3: Cross multiply
    617,793.70x = 926,690.55 × 485,083.30
  4. Step 4: Simplify right side
    617,793.70x = 449,522,110,072.82
  5. Step 5: Solve for x
    x = 449,522,110,072.82/617,793.70
  6. Step 6: Final answer
    x = 727,624.95

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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.