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Finding the Fourth Proportional to 555,606.44, 766,691.44 and 313,910

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Solution

The fourth proportional to 555,606.44, 766,691.44 and 313,910 is: 433,170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,606.44 : 766,691.44 = 313,910 : x
  2. Step 2: Convert to fraction form
    555,606.44/766,691.44 = 313,910/x
  3. Step 3: Cross multiply
    555,606.44x = 766,691.44 × 313,910
  4. Step 4: Simplify right side
    555,606.44x = 240,672,109,930.40
  5. Step 5: Solve for x
    x = 240,672,109,930.40/555,606.44
  6. Step 6: Final answer
    x = 433,170.12

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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.