Home / 1,998,745.20-2,758,195.31-1,139,139.41

Finding the Fourth Proportional to 1,998,745.20, 2,758,195.31 and 1,139,139.41

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Solution

The fourth proportional to 1,998,745.20, 2,758,195.31 and 1,139,139.41 is: 1,571,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,745.20 : 2,758,195.31 = 1,139,139.41 : x
  2. Step 2: Convert to fraction form
    1,998,745.20/2,758,195.31 = 1,139,139.41/x
  3. Step 3: Cross multiply
    1,998,745.20x = 2,758,195.31 × 1,139,139.41
  4. Step 4: Simplify right side
    1,998,745.20x = 3,141,968,958,611.49
  5. Step 5: Solve for x
    x = 3,141,968,958,611.49/1,998,745.20
  6. Step 6: Final answer
    x = 1,571,970.73

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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.