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Finding the Fourth Proportional to 624,866.85, 862,311.96 and 338,380.38

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Solution

The fourth proportional to 624,866.85, 862,311.96 and 338,380.38 is: 466,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,866.85 : 862,311.96 = 338,380.38 : x
  2. Step 2: Convert to fraction form
    624,866.85/862,311.96 = 338,380.38/x
  3. Step 3: Cross multiply
    624,866.85x = 862,311.96 × 338,380.38
  4. Step 4: Simplify right side
    624,866.85x = 291,789,448,703.35
  5. Step 5: Solve for x
    x = 291,789,448,703.35/624,866.85
  6. Step 6: Final answer
    x = 466,962.60

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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.