Home / 1,616,682.78-2,231,021.61-928,399.86

Finding the Fourth Proportional to 1,616,682.78, 2,231,021.61 and 928,399.86

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Solution

The fourth proportional to 1,616,682.78, 2,231,021.61 and 928,399.86 is: 1,281,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616,682.78 : 2,231,021.61 = 928,399.86 : x
  2. Step 2: Convert to fraction form
    1,616,682.78/2,231,021.61 = 928,399.86/x
  3. Step 3: Cross multiply
    1,616,682.78x = 2,231,021.61 × 928,399.86
  4. Step 4: Simplify right side
    1,616,682.78x = 2,071,280,150,380.97
  5. Step 5: Solve for x
    x = 2,071,280,150,380.97/1,616,682.78
  6. Step 6: Final answer
    x = 1,281,191.45

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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.