Home / 1,260,163.20-1,739,040.32-687,198.40

Finding the Fourth Proportional to 1,260,163.20, 1,739,040.32 and 687,198.40

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Solution

The fourth proportional to 1,260,163.20, 1,739,040.32 and 687,198.40 is: 948,342.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,163.20 : 1,739,040.32 = 687,198.40 : x
  2. Step 2: Convert to fraction form
    1,260,163.20/1,739,040.32 = 687,198.40/x
  3. Step 3: Cross multiply
    1,260,163.20x = 1,739,040.32 × 687,198.40
  4. Step 4: Simplify right side
    1,260,163.20x = 1,195,065,725,439.49
  5. Step 5: Solve for x
    x = 1,195,065,725,439.49/1,260,163.20
  6. Step 6: Final answer
    x = 948,342.03

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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.