Home / 1,321,334.73-1,982,297.43-422,830.40

Finding the Fourth Proportional to 1,321,334.73, 1,982,297.43 and 422,830.40

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Solution

The fourth proportional to 1,321,334.73, 1,982,297.43 and 422,830.40 is: 634,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,334.73 : 1,982,297.43 = 422,830.40 : x
  2. Step 2: Convert to fraction form
    1,321,334.73/1,982,297.43 = 422,830.40/x
  3. Step 3: Cross multiply
    1,321,334.73x = 1,982,297.43 × 422,830.40
  4. Step 4: Simplify right side
    1,321,334.73x = 838,175,605,334.39
  5. Step 5: Solve for x
    x = 838,175,605,334.39/1,321,334.73
  6. Step 6: Final answer
    x = 634,340.10

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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.