Home / 681,272.41-940,110.78-409,351.75

Finding the Fourth Proportional to 681,272.41, 940,110.78 and 409,351.75

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Solution

The fourth proportional to 681,272.41, 940,110.78 and 409,351.75 is: 564,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,272.41 : 940,110.78 = 409,351.75 : x
  2. Step 2: Convert to fraction form
    681,272.41/940,110.78 = 409,351.75/x
  3. Step 3: Cross multiply
    681,272.41x = 940,110.78 × 409,351.75
  4. Step 4: Simplify right side
    681,272.41x = 384,835,992,986.87
  5. Step 5: Solve for x
    x = 384,835,992,986.87/681,272.41
  6. Step 6: Final answer
    x = 564,878.29

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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.