Home / 621,830.45-932,735.23-280,083.78

Finding the Fourth Proportional to 621,830.45, 932,735.23 and 280,083.78

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Solution

The fourth proportional to 621,830.45, 932,735.23 and 280,083.78 is: 420,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,830.45 : 932,735.23 = 280,083.78 : x
  2. Step 2: Convert to fraction form
    621,830.45/932,735.23 = 280,083.78/x
  3. Step 3: Cross multiply
    621,830.45x = 932,735.23 × 280,083.78
  4. Step 4: Simplify right side
    621,830.45x = 261,244,008,257.36
  5. Step 5: Solve for x
    x = 261,244,008,257.36/621,830.45
  6. Step 6: Final answer
    x = 420,120.96

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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.