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Finding the Fourth Proportional to 500,967, 751,494.24 and 126,990

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Solution

The fourth proportional to 500,967, 751,494.24 and 126,990 is: 190,496.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,967 : 751,494.24 = 126,990 : x
  2. Step 2: Convert to fraction form
    500,967/751,494.24 = 126,990/x
  3. Step 3: Cross multiply
    500,967x = 751,494.24 × 126,990
  4. Step 4: Simplify right side
    500,967x = 95,432,253,537.60
  5. Step 5: Solve for x
    x = 95,432,253,537.60/500,967
  6. Step 6: Final answer
    x = 190,496.09

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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.