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Finding the Fourth Proportional to 489,757.71, 675,828.58 and 274,856.26

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Solution

The fourth proportional to 489,757.71, 675,828.58 and 274,856.26 is: 379,280.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,757.71 : 675,828.58 = 274,856.26 : x
  2. Step 2: Convert to fraction form
    489,757.71/675,828.58 = 274,856.26/x
  3. Step 3: Cross multiply
    489,757.71x = 675,828.58 × 274,856.26
  4. Step 4: Simplify right side
    489,757.71x = 185,755,711,146.49
  5. Step 5: Solve for x
    x = 185,755,711,146.49/489,757.71
  6. Step 6: Final answer
    x = 379,280.83

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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.