Home / 685,644.52-1,028,753.86-301,195.10

Finding the Fourth Proportional to 685,644.52, 1,028,753.86 and 301,195.10

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Solution

The fourth proportional to 685,644.52, 1,028,753.86 and 301,195.10 is: 451,918.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,644.52 : 1,028,753.86 = 301,195.10 : x
  2. Step 2: Convert to fraction form
    685,644.52/1,028,753.86 = 301,195.10/x
  3. Step 3: Cross multiply
    685,644.52x = 1,028,753.86 × 301,195.10
  4. Step 4: Simplify right side
    685,644.52x = 309,855,621,738.09
  5. Step 5: Solve for x
    x = 309,855,621,738.09/685,644.52
  6. Step 6: Final answer
    x = 451,918.76

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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.