Home / 2,185,121.30-3,015,480.03-1,218,311.78

Finding the Fourth Proportional to 2,185,121.30, 3,015,480.03 and 1,218,311.78

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Solution

The fourth proportional to 2,185,121.30, 3,015,480.03 and 1,218,311.78 is: 1,681,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185,121.30 : 3,015,480.03 = 1,218,311.78 : x
  2. Step 2: Convert to fraction form
    2,185,121.30/3,015,480.03 = 1,218,311.78/x
  3. Step 3: Cross multiply
    2,185,121.30x = 3,015,480.03 × 1,218,311.78
  4. Step 4: Simplify right side
    2,185,121.30x = 3,673,794,842,903.75
  5. Step 5: Solve for x
    x = 3,673,794,842,903.75/2,185,121.30
  6. Step 6: Final answer
    x = 1,681,277.30

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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.