Home / 686,815.10-1,028,254.35-667,132.10

Finding the Fourth Proportional to 686,815.10, 1,028,254.35 and 667,132.10

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Solution

The fourth proportional to 686,815.10, 1,028,254.35 and 667,132.10 is: 998,786.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,815.10 : 1,028,254.35 = 667,132.10 : x
  2. Step 2: Convert to fraction form
    686,815.10/1,028,254.35 = 667,132.10/x
  3. Step 3: Cross multiply
    686,815.10x = 1,028,254.35 × 667,132.10
  4. Step 4: Simplify right side
    686,815.10x = 685,981,483,849.64
  5. Step 5: Solve for x
    x = 685,981,483,849.64/686,815.10
  6. Step 6: Final answer
    x = 998,786.26

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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.