Home / 686,062.20-1,028,429.10-306,768.36

Finding the Fourth Proportional to 686,062.20, 1,028,429.10 and 306,768.36

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Solution

The fourth proportional to 686,062.20, 1,028,429.10 and 306,768.36 is: 459,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,062.20 : 1,028,429.10 = 306,768.36 : x
  2. Step 2: Convert to fraction form
    686,062.20/1,028,429.10 = 306,768.36/x
  3. Step 3: Cross multiply
    686,062.20x = 1,028,429.10 × 306,768.36
  4. Step 4: Simplify right side
    686,062.20x = 315,489,508,383.28
  5. Step 5: Solve for x
    x = 315,489,508,383.28/686,062.20
  6. Step 6: Final answer
    x = 459,855.55

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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.