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Finding the Fourth Proportional to 856,375.60, 1,284,174.60 and 323,719.60

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Solution

The fourth proportional to 856,375.60, 1,284,174.60 and 323,719.60 is: 485,432.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,375.60 : 1,284,174.60 = 323,719.60 : x
  2. Step 2: Convert to fraction form
    856,375.60/1,284,174.60 = 323,719.60/x
  3. Step 3: Cross multiply
    856,375.60x = 1,284,174.60 × 323,719.60
  4. Step 4: Simplify right side
    856,375.60x = 415,712,487,842.16
  5. Step 5: Solve for x
    x = 415,712,487,842.16/856,375.60
  6. Step 6: Final answer
    x = 485,432.43

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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.