Home / 643,318.20-964,979.78-269,078.68

Finding the Fourth Proportional to 643,318.20, 964,979.78 and 269,078.68

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Solution

The fourth proportional to 643,318.20, 964,979.78 and 269,078.68 is: 403,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,318.20 : 964,979.78 = 269,078.68 : x
  2. Step 2: Convert to fraction form
    643,318.20/964,979.78 = 269,078.68/x
  3. Step 3: Cross multiply
    643,318.20x = 964,979.78 × 269,078.68
  4. Step 4: Simplify right side
    643,318.20x = 259,655,485,429.09
  5. Step 5: Solve for x
    x = 259,655,485,429.09/643,318.20
  6. Step 6: Final answer
    x = 403,619.06

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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.