Home / 686,829.92-1,028,839.73-321,568.11

Finding the Fourth Proportional to 686,829.92, 1,028,839.73 and 321,568.11

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Solution

The fourth proportional to 686,829.92, 1,028,839.73 and 321,568.11 is: 481,694.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,829.92 : 1,028,839.73 = 321,568.11 : x
  2. Step 2: Convert to fraction form
    686,829.92/1,028,839.73 = 321,568.11/x
  3. Step 3: Cross multiply
    686,829.92x = 1,028,839.73 × 321,568.11
  4. Step 4: Simplify right side
    686,829.92x = 330,842,045,861.17
  5. Step 5: Solve for x
    x = 330,842,045,861.17/686,829.92
  6. Step 6: Final answer
    x = 481,694.29

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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.