Home / 685,224.78-1,027,865.97-211,919.10

Finding the Fourth Proportional to 685,224.78, 1,027,865.97 and 211,919.10

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Solution

The fourth proportional to 685,224.78, 1,027,865.97 and 211,919.10 is: 317,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,224.78 : 1,027,865.97 = 211,919.10 : x
  2. Step 2: Convert to fraction form
    685,224.78/1,027,865.97 = 211,919.10/x
  3. Step 3: Cross multiply
    685,224.78x = 1,027,865.97 × 211,919.10
  4. Step 4: Simplify right side
    685,224.78x = 217,824,431,283.03
  5. Step 5: Solve for x
    x = 217,824,431,283.03/685,224.78
  6. Step 6: Final answer
    x = 317,887.56

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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.