Home / 675,139.38-1,013,207.49-320,154.59

Finding the Fourth Proportional to 675,139.38, 1,013,207.49 and 320,154.59

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Solution

The fourth proportional to 675,139.38, 1,013,207.49 and 320,154.59 is: 480,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,139.38 : 1,013,207.49 = 320,154.59 : x
  2. Step 2: Convert to fraction form
    675,139.38/1,013,207.49 = 320,154.59/x
  3. Step 3: Cross multiply
    675,139.38x = 1,013,207.49 × 320,154.59
  4. Step 4: Simplify right side
    675,139.38x = 324,383,023,479.84
  5. Step 5: Solve for x
    x = 324,383,023,479.84/675,139.38
  6. Step 6: Final answer
    x = 480,468.23

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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.