Home / 2,128,411.12-3,189,844.32-864,761.44

Finding the Fourth Proportional to 2,128,411.12, 3,189,844.32 and 864,761.44

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Solution

The fourth proportional to 2,128,411.12, 3,189,844.32 and 864,761.44 is: 1,296,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,411.12 : 3,189,844.32 = 864,761.44 : x
  2. Step 2: Convert to fraction form
    2,128,411.12/3,189,844.32 = 864,761.44/x
  3. Step 3: Cross multiply
    2,128,411.12x = 3,189,844.32 × 864,761.44
  4. Step 4: Simplify right side
    2,128,411.12x = 2,758,454,356,321.55
  5. Step 5: Solve for x
    x = 2,758,454,356,321.55/2,128,411.12
  6. Step 6: Final answer
    x = 1,296,015.76

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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.