Home / 1,578,991-2,179,003.80-890,660.56

Finding the Fourth Proportional to 1,578,991, 2,179,003.80 and 890,660.56

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Solution

The fourth proportional to 1,578,991, 2,179,003.80 and 890,660.56 is: 1,229,109.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578,991 : 2,179,003.80 = 890,660.56 : x
  2. Step 2: Convert to fraction form
    1,578,991/2,179,003.80 = 890,660.56/x
  3. Step 3: Cross multiply
    1,578,991x = 2,179,003.80 × 890,660.56
  4. Step 4: Simplify right side
    1,578,991x = 1,940,752,744,750.13
  5. Step 5: Solve for x
    x = 1,940,752,744,750.13/1,578,991
  6. Step 6: Final answer
    x = 1,229,109.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.