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Finding the Fourth Proportional to 555,621.23, 766,601.76 and 348,911.92

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Solution

The fourth proportional to 555,621.23, 766,601.76 and 348,911.92 is: 481,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,621.23 : 766,601.76 = 348,911.92 : x
  2. Step 2: Convert to fraction form
    555,621.23/766,601.76 = 348,911.92/x
  3. Step 3: Cross multiply
    555,621.23x = 766,601.76 × 348,911.92
  4. Step 4: Simplify right side
    555,621.23x = 267,476,491,956.98
  5. Step 5: Solve for x
    x = 267,476,491,956.98/555,621.23
  6. Step 6: Final answer
    x = 481,400.78

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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.