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Finding the Fourth Proportional to 645,483.28, 967,212.96 and 408,325

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Solution

The fourth proportional to 645,483.28, 967,212.96 and 408,325 is: 611,847.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,483.28 : 967,212.96 = 408,325 : x
  2. Step 2: Convert to fraction form
    645,483.28/967,212.96 = 408,325/x
  3. Step 3: Cross multiply
    645,483.28x = 967,212.96 × 408,325
  4. Step 4: Simplify right side
    645,483.28x = 394,937,231,892
  5. Step 5: Solve for x
    x = 394,937,231,892/645,483.28
  6. Step 6: Final answer
    x = 611,847.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.