Home / 859,896.40-1,289,857.20-327,446.86

Finding the Fourth Proportional to 859,896.40, 1,289,857.20 and 327,446.86

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Solution

The fourth proportional to 859,896.40, 1,289,857.20 and 327,446.86 is: 491,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,896.40 : 1,289,857.20 = 327,446.86 : x
  2. Step 2: Convert to fraction form
    859,896.40/1,289,857.20 = 327,446.86/x
  3. Step 3: Cross multiply
    859,896.40x = 1,289,857.20 × 327,446.86
  4. Step 4: Simplify right side
    859,896.40x = 422,359,689,988.39
  5. Step 5: Solve for x
    x = 422,359,689,988.39/859,896.40
  6. Step 6: Final answer
    x = 491,175.09

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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.