Home / 1,189,885.77-1,785,537.84-431,786.39

Finding the Fourth Proportional to 1,189,885.77, 1,785,537.84 and 431,786.39

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Solution

The fourth proportional to 1,189,885.77, 1,785,537.84 and 431,786.39 is: 647,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,885.77 : 1,785,537.84 = 431,786.39 : x
  2. Step 2: Convert to fraction form
    1,189,885.77/1,785,537.84 = 431,786.39/x
  3. Step 3: Cross multiply
    1,189,885.77x = 1,785,537.84 × 431,786.39
  4. Step 4: Simplify right side
    1,189,885.77x = 770,970,929,214.31
  5. Step 5: Solve for x
    x = 770,970,929,214.31/1,189,885.77
  6. Step 6: Final answer
    x = 647,936.93

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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.