Home / 817,696-1,225,747.09-391,120.44

Finding the Fourth Proportional to 817,696, 1,225,747.09 and 391,120.44

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Solution

The fourth proportional to 817,696, 1,225,747.09 and 391,120.44 is: 586,299.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,696 : 1,225,747.09 = 391,120.44 : x
  2. Step 2: Convert to fraction form
    817,696/1,225,747.09 = 391,120.44/x
  3. Step 3: Cross multiply
    817,696x = 1,225,747.09 × 391,120.44
  4. Step 4: Simplify right side
    817,696x = 479,414,741,169.52
  5. Step 5: Solve for x
    x = 479,414,741,169.52/817,696
  6. Step 6: Final answer
    x = 586,299.48

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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.