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Finding the Fourth Proportional to 925,879.60, 1,388,930.34 and 326,717

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Solution

The fourth proportional to 925,879.60, 1,388,930.34 and 326,717 is: 490,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,879.60 : 1,388,930.34 = 326,717 : x
  2. Step 2: Convert to fraction form
    925,879.60/1,388,930.34 = 326,717/x
  3. Step 3: Cross multiply
    925,879.60x = 1,388,930.34 × 326,717
  4. Step 4: Simplify right side
    925,879.60x = 453,787,153,893.78
  5. Step 5: Solve for x
    x = 453,787,153,893.78/925,879.60
  6. Step 6: Final answer
    x = 490,114.65

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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.