Home / 1,389,107.60-2,083,661.40-857,229.20

Finding the Fourth Proportional to 1,389,107.60, 2,083,661.40 and 857,229.20

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Solution

The fourth proportional to 1,389,107.60, 2,083,661.40 and 857,229.20 is: 1,285,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,107.60 : 2,083,661.40 = 857,229.20 : x
  2. Step 2: Convert to fraction form
    1,389,107.60/2,083,661.40 = 857,229.20/x
  3. Step 3: Cross multiply
    1,389,107.60x = 2,083,661.40 × 857,229.20
  4. Step 4: Simplify right side
    1,389,107.60x = 1,786,175,394,992.88
  5. Step 5: Solve for x
    x = 1,786,175,394,992.88/1,389,107.60
  6. Step 6: Final answer
    x = 1,285,843.80

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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.