Home / 1,998,786.72-2,758,325.67-1,081,015.86

Finding the Fourth Proportional to 1,998,786.72, 2,758,325.67 and 1,081,015.86

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Solution

The fourth proportional to 1,998,786.72, 2,758,325.67 and 1,081,015.86 is: 1,491,801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,786.72 : 2,758,325.67 = 1,081,015.86 : x
  2. Step 2: Convert to fraction form
    1,998,786.72/2,758,325.67 = 1,081,015.86/x
  3. Step 3: Cross multiply
    1,998,786.72x = 2,758,325.67 × 1,081,015.86
  4. Step 4: Simplify right side
    1,998,786.72x = 2,981,793,796,315.13
  5. Step 5: Solve for x
    x = 2,981,793,796,315.13/1,998,786.72
  6. Step 6: Final answer
    x = 1,491,801.88

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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.