Home / 813,500.82-1,219,390.87-300,836.52

Finding the Fourth Proportional to 813,500.82, 1,219,390.87 and 300,836.52

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Solution

The fourth proportional to 813,500.82, 1,219,390.87 and 300,836.52 is: 450,936.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,500.82 : 1,219,390.87 = 300,836.52 : x
  2. Step 2: Convert to fraction form
    813,500.82/1,219,390.87 = 300,836.52/x
  3. Step 3: Cross multiply
    813,500.82x = 1,219,390.87 × 300,836.52
  4. Step 4: Simplify right side
    813,500.82x = 366,837,305,850.57
  5. Step 5: Solve for x
    x = 366,837,305,850.57/813,500.82
  6. Step 6: Final answer
    x = 450,936.61

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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.