Home / 790,997-1,186,913.85-431,427.44

Finding the Fourth Proportional to 790,997, 1,186,913.85 and 431,427.44

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Solution

The fourth proportional to 790,997, 1,186,913.85 and 431,427.44 is: 647,369.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,997 : 1,186,913.85 = 431,427.44 : x
  2. Step 2: Convert to fraction form
    790,997/1,186,913.85 = 431,427.44/x
  3. Step 3: Cross multiply
    790,997x = 1,186,913.85 × 431,427.44
  4. Step 4: Simplify right side
    790,997x = 512,067,203,806.04
  5. Step 5: Solve for x
    x = 512,067,203,806.04/790,997
  6. Step 6: Final answer
    x = 647,369.34

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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.