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Finding the Fourth Proportional to 617,644.81, 926,626.94 and 361,693.53

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Solution

The fourth proportional to 617,644.81, 926,626.94 and 361,693.53 is: 542,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,644.81 : 926,626.94 = 361,693.53 : x
  2. Step 2: Convert to fraction form
    617,644.81/926,626.94 = 361,693.53/x
  3. Step 3: Cross multiply
    617,644.81x = 926,626.94 × 361,693.53
  4. Step 4: Simplify right side
    617,644.81x = 335,154,968,921.70
  5. Step 5: Solve for x
    x = 335,154,968,921.70/617,644.81
  6. Step 6: Final answer
    x = 542,633.83

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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.