Home / 1,998,783.72-2,758,321.53-1,081,012.86

Finding the Fourth Proportional to 1,998,783.72, 2,758,321.53 and 1,081,012.86

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Solution

The fourth proportional to 1,998,783.72, 2,758,321.53 and 1,081,012.86 is: 1,491,797.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,783.72 : 2,758,321.53 = 1,081,012.86 : x
  2. Step 2: Convert to fraction form
    1,998,783.72/2,758,321.53 = 1,081,012.86/x
  3. Step 3: Cross multiply
    1,998,783.72x = 2,758,321.53 × 1,081,012.86
  4. Step 4: Simplify right side
    1,998,783.72x = 2,981,781,045,944.88
  5. Step 5: Solve for x
    x = 2,981,781,045,944.88/1,998,783.72
  6. Step 6: Final answer
    x = 1,491,797.74

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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.