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Finding the Fourth Proportional to 513,630.72, 769,940.64 and 300,127.68

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Solution

The fourth proportional to 513,630.72, 769,940.64 and 300,127.68 is: 449,896.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,630.72 : 769,940.64 = 300,127.68 : x
  2. Step 2: Convert to fraction form
    513,630.72/769,940.64 = 300,127.68/x
  3. Step 3: Cross multiply
    513,630.72x = 769,940.64 × 300,127.68
  4. Step 4: Simplify right side
    513,630.72x = 231,080,498,020.92
  5. Step 5: Solve for x
    x = 231,080,498,020.92/513,630.72
  6. Step 6: Final answer
    x = 449,896.18

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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.