Home / 819,405.88-1,129,917.90-647,037.88

Finding the Fourth Proportional to 819,405.88, 1,129,917.90 and 647,037.88

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Solution

The fourth proportional to 819,405.88, 1,129,917.90 and 647,037.88 is: 892,231.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,405.88 : 1,129,917.90 = 647,037.88 : x
  2. Step 2: Convert to fraction form
    819,405.88/1,129,917.90 = 647,037.88/x
  3. Step 3: Cross multiply
    819,405.88x = 1,129,917.90 × 647,037.88
  4. Step 4: Simplify right side
    819,405.88x = 731,099,682,590.05
  5. Step 5: Solve for x
    x = 731,099,682,590.05/819,405.88
  6. Step 6: Final answer
    x = 892,231.43

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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.