Home / 1,399,339.20-2,099,158.56-388,465.44

Finding the Fourth Proportional to 1,399,339.20, 2,099,158.56 and 388,465.44

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Solution

The fourth proportional to 1,399,339.20, 2,099,158.56 and 388,465.44 is: 582,739.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,339.20 : 2,099,158.56 = 388,465.44 : x
  2. Step 2: Convert to fraction form
    1,399,339.20/2,099,158.56 = 388,465.44/x
  3. Step 3: Cross multiply
    1,399,339.20x = 2,099,158.56 × 388,465.44
  4. Step 4: Simplify right side
    1,399,339.20x = 815,450,553,640.17
  5. Step 5: Solve for x
    x = 815,450,553,640.17/1,399,339.20
  6. Step 6: Final answer
    x = 582,739.73

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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.