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Finding the Fourth Proportional to 489,889.44, 676,086.48 and 275,043.60

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Solution

The fourth proportional to 489,889.44, 676,086.48 and 275,043.60 is: 379,582.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,889.44 : 676,086.48 = 275,043.60 : x
  2. Step 2: Convert to fraction form
    489,889.44/676,086.48 = 275,043.60/x
  3. Step 3: Cross multiply
    489,889.44x = 676,086.48 × 275,043.60
  4. Step 4: Simplify right side
    489,889.44x = 185,953,259,370.53
  5. Step 5: Solve for x
    x = 185,953,259,370.53/489,889.44
  6. Step 6: Final answer
    x = 379,582.09

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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.