Home / 826,718.05-1,239,758.24-321,212.47

Finding the Fourth Proportional to 826,718.05, 1,239,758.24 and 321,212.47

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Solution

The fourth proportional to 826,718.05, 1,239,758.24 and 321,212.47 is: 481,694.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,718.05 : 1,239,758.24 = 321,212.47 : x
  2. Step 2: Convert to fraction form
    826,718.05/1,239,758.24 = 321,212.47/x
  3. Step 3: Cross multiply
    826,718.05x = 1,239,758.24 × 321,212.47
  4. Step 4: Simplify right side
    826,718.05x = 398,225,812,484.52
  5. Step 5: Solve for x
    x = 398,225,812,484.52/826,718.05
  6. Step 6: Final answer
    x = 481,694.83

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1.5x scale

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.