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Finding the Fourth Proportional to 489,889.27, 675,994.98 and 275,052.97

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Solution

The fourth proportional to 489,889.27, 675,994.98 and 275,052.97 is: 379,543.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,889.27 : 675,994.98 = 275,052.97 : x
  2. Step 2: Convert to fraction form
    489,889.27/675,994.98 = 275,052.97/x
  3. Step 3: Cross multiply
    489,889.27x = 675,994.98 × 275,052.97
  4. Step 4: Simplify right side
    489,889.27x = 185,934,426,954.09
  5. Step 5: Solve for x
    x = 185,934,426,954.09/489,889.27
  6. Step 6: Final answer
    x = 379,543.78

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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.