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Finding the Fourth Proportional to 589,221.44, 813,121.44 and 320,949.44

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Solution

The fourth proportional to 589,221.44, 813,121.44 and 320,949.44 is: 442,907.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,221.44 : 813,121.44 = 320,949.44 : x
  2. Step 2: Convert to fraction form
    589,221.44/813,121.44 = 320,949.44/x
  3. Step 3: Cross multiply
    589,221.44x = 813,121.44 × 320,949.44
  4. Step 4: Simplify right side
    589,221.44x = 260,970,870,819.99
  5. Step 5: Solve for x
    x = 260,970,870,819.99/589,221.44
  6. Step 6: Final answer
    x = 442,907.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.