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Finding the Fourth Proportional to 489,618.73, 675,722.40 and 274,759.65

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Solution

The fourth proportional to 489,618.73, 675,722.40 and 274,759.65 is: 379,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,618.73 : 675,722.40 = 274,759.65 : x
  2. Step 2: Convert to fraction form
    489,618.73/675,722.40 = 274,759.65/x
  3. Step 3: Cross multiply
    489,618.73x = 675,722.40 × 274,759.65
  4. Step 4: Simplify right side
    489,618.73x = 185,661,250,121.16
  5. Step 5: Solve for x
    x = 185,661,250,121.16/489,618.73
  6. Step 6: Final answer
    x = 379,195.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.