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Finding the Fourth Proportional to 498,620.80, 746,878.20 and 330,221.80

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Solution

The fourth proportional to 498,620.80, 746,878.20 and 330,221.80 is: 494,635.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,620.80 : 746,878.20 = 330,221.80 : x
  2. Step 2: Convert to fraction form
    498,620.80/746,878.20 = 330,221.80/x
  3. Step 3: Cross multiply
    498,620.80x = 746,878.20 × 330,221.80
  4. Step 4: Simplify right side
    498,620.80x = 246,635,463,584.76
  5. Step 5: Solve for x
    x = 246,635,463,584.76/498,620.80
  6. Step 6: Final answer
    x = 494,635.33

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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.