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Finding the Fourth Proportional to 489,899.44, 676,100.28 and 275,053.60

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Solution

The fourth proportional to 489,899.44, 676,100.28 and 275,053.60 is: 379,595.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,899.44 : 676,100.28 = 275,053.60 : x
  2. Step 2: Convert to fraction form
    489,899.44/676,100.28 = 275,053.60/x
  3. Step 3: Cross multiply
    489,899.44x = 676,100.28 × 275,053.60
  4. Step 4: Simplify right side
    489,899.44x = 185,963,815,975.01
  5. Step 5: Solve for x
    x = 185,963,815,975.01/489,899.44
  6. Step 6: Final answer
    x = 379,595.89

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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.