Home / 686,101.11-1,028,972.31-206,200.57

Finding the Fourth Proportional to 686,101.11, 1,028,972.31 and 206,200.57

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Solution

The fourth proportional to 686,101.11, 1,028,972.31 and 206,200.57 is: 309,246.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,101.11 : 1,028,972.31 = 206,200.57 : x
  2. Step 2: Convert to fraction form
    686,101.11/1,028,972.31 = 206,200.57/x
  3. Step 3: Cross multiply
    686,101.11x = 1,028,972.31 × 206,200.57
  4. Step 4: Simplify right side
    686,101.11x = 212,174,675,384.68
  5. Step 5: Solve for x
    x = 212,174,675,384.68/686,101.11
  6. Step 6: Final answer
    x = 309,246.95

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1.5x scale

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.