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Finding the Fourth Proportional to 617,126.70, 925,357.20 and 279,983.40

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Solution

The fourth proportional to 617,126.70, 925,357.20 and 279,983.40 is: 419,824.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,126.70 : 925,357.20 = 279,983.40 : x
  2. Step 2: Convert to fraction form
    617,126.70/925,357.20 = 279,983.40/x
  3. Step 3: Cross multiply
    617,126.70x = 925,357.20 × 279,983.40
  4. Step 4: Simplify right side
    617,126.70x = 259,084,655,070.48
  5. Step 5: Solve for x
    x = 259,084,655,070.48/617,126.70
  6. Step 6: Final answer
    x = 419,824.09

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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.