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Finding the Fourth Proportional to 645,318.80, 967,200.60 and 329,613.20

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Solution

The fourth proportional to 645,318.80, 967,200.60 and 329,613.20 is: 494,022.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,318.80 : 967,200.60 = 329,613.20 : x
  2. Step 2: Convert to fraction form
    645,318.80/967,200.60 = 329,613.20/x
  3. Step 3: Cross multiply
    645,318.80x = 967,200.60 × 329,613.20
  4. Step 4: Simplify right side
    645,318.80x = 318,802,084,807.92
  5. Step 5: Solve for x
    x = 318,802,084,807.92/645,318.80
  6. Step 6: Final answer
    x = 494,022.62

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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.