Home / 1,321,335.03-1,982,297.79-422,830.69

Finding the Fourth Proportional to 1,321,335.03, 1,982,297.79 and 422,830.69

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Solution

The fourth proportional to 1,321,335.03, 1,982,297.79 and 422,830.69 is: 634,340.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,335.03 : 1,982,297.79 = 422,830.69 : x
  2. Step 2: Convert to fraction form
    1,321,335.03/1,982,297.79 = 422,830.69/x
  3. Step 3: Cross multiply
    1,321,335.03x = 1,982,297.79 × 422,830.69
  4. Step 4: Simplify right side
    1,321,335.03x = 838,176,337,375.43
  5. Step 5: Solve for x
    x = 838,176,337,375.43/1,321,335.03
  6. Step 6: Final answer
    x = 634,340.51

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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.