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Finding the Fourth Proportional to 555,498.42, 766,603.55 and 313,791.18

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Solution

The fourth proportional to 555,498.42, 766,603.55 and 313,791.18 is: 433,040.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,498.42 : 766,603.55 = 313,791.18 : x
  2. Step 2: Convert to fraction form
    555,498.42/766,603.55 = 313,791.18/x
  3. Step 3: Cross multiply
    555,498.42x = 766,603.55 × 313,791.18
  4. Step 4: Simplify right side
    555,498.42x = 240,553,432,546.69
  5. Step 5: Solve for x
    x = 240,553,432,546.69/555,498.42
  6. Step 6: Final answer
    x = 433,040.71

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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.