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Finding the Fourth Proportional to 483,608.46, 725,331.69 and 128,627.58

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Solution

The fourth proportional to 483,608.46, 725,331.69 and 128,627.58 is: 192,919.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,608.46 : 725,331.69 = 128,627.58 : x
  2. Step 2: Convert to fraction form
    483,608.46/725,331.69 = 128,627.58/x
  3. Step 3: Cross multiply
    483,608.46x = 725,331.69 × 128,627.58
  4. Step 4: Simplify right side
    483,608.46x = 93,297,659,982.01
  5. Step 5: Solve for x
    x = 93,297,659,982.01/483,608.46
  6. Step 6: Final answer
    x = 192,919.83

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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.