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Finding the Fourth Proportional to 489,817.28, 675,947.52 and 274,957.76

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Solution

The fourth proportional to 489,817.28, 675,947.52 and 274,957.76 is: 379,441.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,817.28 : 675,947.52 = 274,957.76 : x
  2. Step 2: Convert to fraction form
    489,817.28/675,947.52 = 274,957.76/x
  3. Step 3: Cross multiply
    489,817.28x = 675,947.52 × 274,957.76
  4. Step 4: Simplify right side
    489,817.28x = 185,857,015,976.76
  5. Step 5: Solve for x
    x = 185,857,015,976.76/489,817.28
  6. Step 6: Final answer
    x = 379,441.53

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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.