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Finding the Fourth Proportional to 617,127.70, 925,358.70 and 279,984.40

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Solution

The fourth proportional to 617,127.70, 925,358.70 and 279,984.40 is: 419,825.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,127.70 : 925,358.70 = 279,984.40 : x
  2. Step 2: Convert to fraction form
    617,127.70/925,358.70 = 279,984.40/x
  3. Step 3: Cross multiply
    617,127.70x = 925,358.70 × 279,984.40
  4. Step 4: Simplify right side
    617,127.70x = 259,086,000,404.28
  5. Step 5: Solve for x
    x = 259,086,000,404.28/617,127.70
  6. Step 6: Final answer
    x = 419,825.59

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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.