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Finding the Fourth Proportional to 489,617.73, 675,721.02 and 274,758.65

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Solution

The fourth proportional to 489,617.73, 675,721.02 and 274,758.65 is: 379,194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,617.73 : 675,721.02 = 274,758.65 : x
  2. Step 2: Convert to fraction form
    489,617.73/675,721.02 = 274,758.65/x
  3. Step 3: Cross multiply
    489,617.73x = 675,721.02 × 274,758.65
  4. Step 4: Simplify right side
    489,617.73x = 185,660,190,479.43
  5. Step 5: Solve for x
    x = 185,660,190,479.43/489,617.73
  6. Step 6: Final answer
    x = 379,194.18

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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.