Home / 412,518.57-618,778.38-113,001.78

Finding the Fourth Proportional to 412,518.57, 618,778.38 and 113,001.78

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Solution

The fourth proportional to 412,518.57, 618,778.38 and 113,001.78 is: 169,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,518.57 : 618,778.38 = 113,001.78 : x
  2. Step 2: Convert to fraction form
    412,518.57/618,778.38 = 113,001.78/x
  3. Step 3: Cross multiply
    412,518.57x = 618,778.38 × 113,001.78
  4. Step 4: Simplify right side
    412,518.57x = 69,923,058,365.52
  5. Step 5: Solve for x
    x = 69,923,058,365.52/412,518.57
  6. Step 6: Final answer
    x = 169,502.82

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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.