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Finding the Fourth Proportional to 453,713.76, 679,821.78 and 263,640.58

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Solution

The fourth proportional to 453,713.76, 679,821.78 and 263,640.58 is: 395,025.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,713.76 : 679,821.78 = 263,640.58 : x
  2. Step 2: Convert to fraction form
    453,713.76/679,821.78 = 263,640.58/x
  3. Step 3: Cross multiply
    453,713.76x = 679,821.78 × 263,640.58
  4. Step 4: Simplify right side
    453,713.76x = 179,228,608,375.83
  5. Step 5: Solve for x
    x = 179,228,608,375.83/453,713.76
  6. Step 6: Final answer
    x = 395,025.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.