Home / 686,395.32-1,028,867.04-253,834.80

Finding the Fourth Proportional to 686,395.32, 1,028,867.04 and 253,834.80

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Solution

The fourth proportional to 686,395.32, 1,028,867.04 and 253,834.80 is: 380,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,395.32 : 1,028,867.04 = 253,834.80 : x
  2. Step 2: Convert to fraction form
    686,395.32/1,028,867.04 = 253,834.80/x
  3. Step 3: Cross multiply
    686,395.32x = 1,028,867.04 × 253,834.80
  4. Step 4: Simplify right side
    686,395.32x = 261,162,259,324.99
  5. Step 5: Solve for x
    x = 261,162,259,324.99/686,395.32
  6. Step 6: Final answer
    x = 380,483.74

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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.