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Finding the Fourth Proportional to 570,394.20, 856,432.38 and 318,167.48

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Solution

The fourth proportional to 570,394.20, 856,432.38 and 318,167.48 is: 477,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,394.20 : 856,432.38 = 318,167.48 : x
  2. Step 2: Convert to fraction form
    570,394.20/856,432.38 = 318,167.48/x
  3. Step 3: Cross multiply
    570,394.20x = 856,432.38 × 318,167.48
  4. Step 4: Simplify right side
    570,394.20x = 272,488,932,135.00
  5. Step 5: Solve for x
    x = 272,488,932,135.00/570,394.20
  6. Step 6: Final answer
    x = 477,720.38

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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.