Home / 1,121,912.28-1,548,238.80-612,615.12

Finding the Fourth Proportional to 1,121,912.28, 1,548,238.80 and 612,615.12

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Solution

The fourth proportional to 1,121,912.28, 1,548,238.80 and 612,615.12 is: 845,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,912.28 : 1,548,238.80 = 612,615.12 : x
  2. Step 2: Convert to fraction form
    1,121,912.28/1,548,238.80 = 612,615.12/x
  3. Step 3: Cross multiply
    1,121,912.28x = 1,548,238.80 × 612,615.12
  4. Step 4: Simplify right side
    1,121,912.28x = 948,474,498,250.66
  5. Step 5: Solve for x
    x = 948,474,498,250.66/1,121,912.28
  6. Step 6: Final answer
    x = 845,408.79

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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.