Home / 686,904.66-1,025,353.68-636,251.46

Finding the Fourth Proportional to 686,904.66, 1,025,353.68 and 636,251.46

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Solution

The fourth proportional to 686,904.66, 1,025,353.68 and 636,251.46 is: 949,742.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,904.66 : 1,025,353.68 = 636,251.46 : x
  2. Step 2: Convert to fraction form
    686,904.66/1,025,353.68 = 636,251.46/x
  3. Step 3: Cross multiply
    686,904.66x = 1,025,353.68 × 636,251.46
  4. Step 4: Simplify right side
    686,904.66x = 652,382,775,916.37
  5. Step 5: Solve for x
    x = 652,382,775,916.37/686,904.66
  6. Step 6: Final answer
    x = 949,742.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.