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Finding the Fourth Proportional to 483,775.62, 725,650.07 and 128,792.72

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Solution

The fourth proportional to 483,775.62, 725,650.07 and 128,792.72 is: 193,185.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,775.62 : 725,650.07 = 128,792.72 : x
  2. Step 2: Convert to fraction form
    483,775.62/725,650.07 = 128,792.72/x
  3. Step 3: Cross multiply
    483,775.62x = 725,650.07 × 128,792.72
  4. Step 4: Simplify right side
    483,775.62x = 93,458,442,011.28
  5. Step 5: Solve for x
    x = 93,458,442,011.28/483,775.62
  6. Step 6: Final answer
    x = 193,185.51

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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.