Home / 1,028,679-1,419,248.97-666,380.58

Finding the Fourth Proportional to 1,028,679, 1,419,248.97 and 666,380.58

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Solution

The fourth proportional to 1,028,679, 1,419,248.97 and 666,380.58 is: 919,392.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,679 : 1,419,248.97 = 666,380.58 : x
  2. Step 2: Convert to fraction form
    1,028,679/1,419,248.97 = 666,380.58/x
  3. Step 3: Cross multiply
    1,028,679x = 1,419,248.97 × 666,380.58
  4. Step 4: Simplify right side
    1,028,679x = 945,759,951,793.00
  5. Step 5: Solve for x
    x = 945,759,951,793.00/1,028,679
  6. Step 6: Final answer
    x = 919,392.69

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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.