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Finding the Fourth Proportional to 483,879.72, 667,791.38 and 290,294.70

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Solution

The fourth proportional to 483,879.72, 667,791.38 and 290,294.70 is: 400,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,879.72 : 667,791.38 = 290,294.70 : x
  2. Step 2: Convert to fraction form
    483,879.72/667,791.38 = 290,294.70/x
  3. Step 3: Cross multiply
    483,879.72x = 667,791.38 × 290,294.70
  4. Step 4: Simplify right side
    483,879.72x = 193,856,293,529.26
  5. Step 5: Solve for x
    x = 193,856,293,529.26/483,879.72
  6. Step 6: Final answer
    x = 400,629.10

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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.