Home / 409,077.60-613,650.96-128,675.04

Finding the Fourth Proportional to 409,077.60, 613,650.96 and 128,675.04

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Solution

The fourth proportional to 409,077.60, 613,650.96 and 128,675.04 is: 193,023.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,077.60 : 613,650.96 = 128,675.04 : x
  2. Step 2: Convert to fraction form
    409,077.60/613,650.96 = 128,675.04/x
  3. Step 3: Cross multiply
    409,077.60x = 613,650.96 × 128,675.04
  4. Step 4: Simplify right side
    409,077.60x = 78,961,561,824.04
  5. Step 5: Solve for x
    x = 78,961,561,824.04/409,077.60
  6. Step 6: Final answer
    x = 193,023.43

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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.