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Finding the Fourth Proportional to 555,377.68, 766,405.79 and 329,023.18

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Solution

The fourth proportional to 555,377.68, 766,405.79 and 329,023.18 is: 454,042.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,377.68 : 766,405.79 = 329,023.18 : x
  2. Step 2: Convert to fraction form
    555,377.68/766,405.79 = 329,023.18/x
  3. Step 3: Cross multiply
    555,377.68x = 766,405.79 × 329,023.18
  4. Step 4: Simplify right side
    555,377.68x = 252,165,270,196.21
  5. Step 5: Solve for x
    x = 252,165,270,196.21/555,377.68
  6. Step 6: Final answer
    x = 454,042.86

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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.