Home / 1,211,422.33-1,671,739.85-667,608.38

Finding the Fourth Proportional to 1,211,422.33, 1,671,739.85 and 667,608.38

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Solution

The fourth proportional to 1,211,422.33, 1,671,739.85 and 667,608.38 is: 921,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,422.33 : 1,671,739.85 = 667,608.38 : x
  2. Step 2: Convert to fraction form
    1,211,422.33/1,671,739.85 = 667,608.38/x
  3. Step 3: Cross multiply
    1,211,422.33x = 1,671,739.85 × 667,608.38
  4. Step 4: Simplify right side
    1,211,422.33x = 1,116,067,521,343.20
  5. Step 5: Solve for x
    x = 1,116,067,521,343.20/1,211,422.33
  6. Step 6: Final answer
    x = 921,286.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.