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Finding the Fourth Proportional to 551,862.45, 827,793.68 and 285,704.55

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Solution

The fourth proportional to 551,862.45, 827,793.68 and 285,704.55 is: 428,556.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,862.45 : 827,793.68 = 285,704.55 : x
  2. Step 2: Convert to fraction form
    551,862.45/827,793.68 = 285,704.55/x
  3. Step 3: Cross multiply
    551,862.45x = 827,793.68 × 285,704.55
  4. Step 4: Simplify right side
    551,862.45x = 236,504,419,408.72
  5. Step 5: Solve for x
    x = 236,504,419,408.72/551,862.45
  6. Step 6: Final answer
    x = 428,556.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.