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Finding the Fourth Proportional to 567,423.42, 783,044.12 and 312,778.86

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Solution

The fourth proportional to 567,423.42, 783,044.12 and 312,778.86 is: 431,634.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,423.42 : 783,044.12 = 312,778.86 : x
  2. Step 2: Convert to fraction form
    567,423.42/783,044.12 = 312,778.86/x
  3. Step 3: Cross multiply
    567,423.42x = 783,044.12 × 312,778.86
  4. Step 4: Simplify right side
    567,423.42x = 244,919,647,183.30
  5. Step 5: Solve for x
    x = 244,919,647,183.30/567,423.42
  6. Step 6: Final answer
    x = 431,634.72

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1.5x scale

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.