Home / 1,387,067.80-2,080,893.30-787,538.20

Finding the Fourth Proportional to 1,387,067.80, 2,080,893.30 and 787,538.20

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Solution

The fourth proportional to 1,387,067.80, 2,080,893.30 and 787,538.20 is: 1,181,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,067.80 : 2,080,893.30 = 787,538.20 : x
  2. Step 2: Convert to fraction form
    1,387,067.80/2,080,893.30 = 787,538.20/x
  3. Step 3: Cross multiply
    1,387,067.80x = 2,080,893.30 × 787,538.20
  4. Step 4: Simplify right side
    1,387,067.80x = 1,638,782,963,874.06
  5. Step 5: Solve for x
    x = 1,638,782,963,874.06/1,387,067.80
  6. Step 6: Final answer
    x = 1,181,472.86

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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.