Home / 1,978,067-2,729,732.46-1,072,649.72

Finding the Fourth Proportional to 1,978,067, 2,729,732.46 and 1,072,649.72

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Solution

The fourth proportional to 1,978,067, 2,729,732.46 and 1,072,649.72 is: 1,480,256.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,067 : 2,729,732.46 = 1,072,649.72 : x
  2. Step 2: Convert to fraction form
    1,978,067/2,729,732.46 = 1,072,649.72/x
  3. Step 3: Cross multiply
    1,978,067x = 2,729,732.46 × 1,072,649.72
  4. Step 4: Simplify right side
    1,978,067x = 2,928,046,758,893.91
  5. Step 5: Solve for x
    x = 2,928,046,758,893.91/1,978,067
  6. Step 6: Final answer
    x = 1,480,256.61

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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.