Home / 2,015,719.20-3,020,079.60-1,305,381.60

Finding the Fourth Proportional to 2,015,719.20, 3,020,079.60 and 1,305,381.60

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Solution

The fourth proportional to 2,015,719.20, 3,020,079.60 and 1,305,381.60 is: 1,955,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015,719.20 : 3,020,079.60 = 1,305,381.60 : x
  2. Step 2: Convert to fraction form
    2,015,719.20/3,020,079.60 = 1,305,381.60/x
  3. Step 3: Cross multiply
    2,015,719.20x = 3,020,079.60 × 1,305,381.60
  4. Step 4: Simplify right side
    2,015,719.20x = 3,942,356,340,375.36
  5. Step 5: Solve for x
    x = 3,942,356,340,375.36/2,015,719.20
  6. Step 6: Final answer
    x = 1,955,806.31

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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.