Home / 862,291.89-1,189,964.97-518,133.57

Finding the Fourth Proportional to 862,291.89, 1,189,964.97 and 518,133.57

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Solution

The fourth proportional to 862,291.89, 1,189,964.97 and 518,133.57 is: 715,025.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,291.89 : 1,189,964.97 = 518,133.57 : x
  2. Step 2: Convert to fraction form
    862,291.89/1,189,964.97 = 518,133.57/x
  3. Step 3: Cross multiply
    862,291.89x = 1,189,964.97 × 518,133.57
  4. Step 4: Simplify right side
    862,291.89x = 616,560,794,306.25
  5. Step 5: Solve for x
    x = 616,560,794,306.25/862,291.89
  6. Step 6: Final answer
    x = 715,025.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.