Home / 1,320,907.19-1,981,195.38-422,274.38

Finding the Fourth Proportional to 1,320,907.19, 1,981,195.38 and 422,274.38

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Solution

The fourth proportional to 1,320,907.19, 1,981,195.38 and 422,274.38 is: 633,358.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,907.19 : 1,981,195.38 = 422,274.38 : x
  2. Step 2: Convert to fraction form
    1,320,907.19/1,981,195.38 = 422,274.38/x
  3. Step 3: Cross multiply
    1,320,907.19x = 1,981,195.38 × 422,274.38
  4. Step 4: Simplify right side
    1,320,907.19x = 836,608,040,842.39
  5. Step 5: Solve for x
    x = 836,608,040,842.39/1,320,907.19
  6. Step 6: Final answer
    x = 633,358.69

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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.