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Finding the Fourth Proportional to 617,026.20, 925,357.74 and 279,871.80

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Solution

The fourth proportional to 617,026.20, 925,357.74 and 279,871.80 is: 419,725.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,026.20 : 925,357.74 = 279,871.80 : x
  2. Step 2: Convert to fraction form
    617,026.20/925,357.74 = 279,871.80/x
  3. Step 3: Cross multiply
    617,026.20x = 925,357.74 × 279,871.80
  4. Step 4: Simplify right side
    617,026.20x = 258,981,536,337.73
  5. Step 5: Solve for x
    x = 258,981,536,337.73/617,026.20
  6. Step 6: Final answer
    x = 419,725.35

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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.