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Finding the Fourth Proportional to 422,328.48, 632,020.07 and 345,539.57

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Solution

The fourth proportional to 422,328.48, 632,020.07 and 345,539.57 is: 517,104.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,328.48 : 632,020.07 = 345,539.57 : x
  2. Step 2: Convert to fraction form
    422,328.48/632,020.07 = 345,539.57/x
  3. Step 3: Cross multiply
    422,328.48x = 632,020.07 × 345,539.57
  4. Step 4: Simplify right side
    422,328.48x = 218,387,940,922.92
  5. Step 5: Solve for x
    x = 218,387,940,922.92/422,328.48
  6. Step 6: Final answer
    x = 517,104.46

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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.