Home / 1,449,972.72-2,173,761.54-639,780.30

Finding the Fourth Proportional to 1,449,972.72, 2,173,761.54 and 639,780.30

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Solution

The fourth proportional to 1,449,972.72, 2,173,761.54 and 639,780.30 is: 959,142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449,972.72 : 2,173,761.54 = 639,780.30 : x
  2. Step 2: Convert to fraction form
    1,449,972.72/2,173,761.54 = 639,780.30/x
  3. Step 3: Cross multiply
    1,449,972.72x = 2,173,761.54 × 639,780.30
  4. Step 4: Simplify right side
    1,449,972.72x = 1,390,729,810,189.66
  5. Step 5: Solve for x
    x = 1,390,729,810,189.66/1,449,972.72
  6. Step 6: Final answer
    x = 959,142.05

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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.