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Finding the Fourth Proportional to 481,351.31, 720,962.68 and 329,187.77

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Solution

The fourth proportional to 481,351.31, 720,962.68 and 329,187.77 is: 493,053.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,351.31 : 720,962.68 = 329,187.77 : x
  2. Step 2: Convert to fraction form
    481,351.31/720,962.68 = 329,187.77/x
  3. Step 3: Cross multiply
    481,351.31x = 720,962.68 × 329,187.77
  4. Step 4: Simplify right side
    481,351.31x = 237,332,100,526.72
  5. Step 5: Solve for x
    x = 237,332,100,526.72/481,351.31
  6. Step 6: Final answer
    x = 493,053.82

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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.