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Finding the Fourth Proportional to 393,764.60, 589,772.10 and 323,780.60

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Solution

The fourth proportional to 393,764.60, 589,772.10 and 323,780.60 is: 484,951.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,764.60 : 589,772.10 = 323,780.60 : x
  2. Step 2: Convert to fraction form
    393,764.60/589,772.10 = 323,780.60/x
  3. Step 3: Cross multiply
    393,764.60x = 589,772.10 × 323,780.60
  4. Step 4: Simplify right side
    393,764.60x = 190,956,764,401.26
  5. Step 5: Solve for x
    x = 190,956,764,401.26/393,764.60
  6. Step 6: Final answer
    x = 484,951.58

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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.