Home / 687,780.24-949,147.92-381,876.36

Finding the Fourth Proportional to 687,780.24, 949,147.92 and 381,876.36

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Solution

The fourth proportional to 687,780.24, 949,147.92 and 381,876.36 is: 526,995.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,780.24 : 949,147.92 = 381,876.36 : x
  2. Step 2: Convert to fraction form
    687,780.24/949,147.92 = 381,876.36/x
  3. Step 3: Cross multiply
    687,780.24x = 949,147.92 × 381,876.36
  4. Step 4: Simplify right side
    687,780.24x = 362,457,152,791.17
  5. Step 5: Solve for x
    x = 362,457,152,791.17/687,780.24
  6. Step 6: Final answer
    x = 526,995.59

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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.