Home / 1,391,748.43-1,920,581.60-810,935.37

Finding the Fourth Proportional to 1,391,748.43, 1,920,581.60 and 810,935.37

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Solution

The fourth proportional to 1,391,748.43, 1,920,581.60 and 810,935.37 is: 1,119,072.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,748.43 : 1,920,581.60 = 810,935.37 : x
  2. Step 2: Convert to fraction form
    1,391,748.43/1,920,581.60 = 810,935.37/x
  3. Step 3: Cross multiply
    1,391,748.43x = 1,920,581.60 × 810,935.37
  4. Step 4: Simplify right side
    1,391,748.43x = 1,557,467,542,835.62
  5. Step 5: Solve for x
    x = 1,557,467,542,835.62/1,391,748.43
  6. Step 6: Final answer
    x = 1,119,072.61

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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.