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Finding the Fourth Proportional to 663,964.80, 996,076.80 and 264,537.60

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Solution

The fourth proportional to 663,964.80, 996,076.80 and 264,537.60 is: 396,858.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,964.80 : 996,076.80 = 264,537.60 : x
  2. Step 2: Convert to fraction form
    663,964.80/996,076.80 = 264,537.60/x
  3. Step 3: Cross multiply
    663,964.80x = 996,076.80 × 264,537.60
  4. Step 4: Simplify right side
    663,964.80x = 263,499,766,087.68
  5. Step 5: Solve for x
    x = 263,499,766,087.68/663,964.80
  6. Step 6: Final answer
    x = 396,858.04

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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.