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Finding the Fourth Proportional to 451,358.92, 622,654.86 and 379,712.80

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Solution

The fourth proportional to 451,358.92, 622,654.86 and 379,712.80 is: 523,818.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,358.92 : 622,654.86 = 379,712.80 : x
  2. Step 2: Convert to fraction form
    451,358.92/622,654.86 = 379,712.80/x
  3. Step 3: Cross multiply
    451,358.92x = 622,654.86 × 379,712.80
  4. Step 4: Simplify right side
    451,358.92x = 236,430,020,324.21
  5. Step 5: Solve for x
    x = 236,430,020,324.21/451,358.92
  6. Step 6: Final answer
    x = 523,818.21

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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.