Home / 1,279,408.68-1,919,777.20-521,805.96

Finding the Fourth Proportional to 1,279,408.68, 1,919,777.20 and 521,805.96

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Solution

The fourth proportional to 1,279,408.68, 1,919,777.20 and 521,805.96 is: 782,979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,408.68 : 1,919,777.20 = 521,805.96 : x
  2. Step 2: Convert to fraction form
    1,279,408.68/1,919,777.20 = 521,805.96/x
  3. Step 3: Cross multiply
    1,279,408.68x = 1,919,777.20 × 521,805.96
  4. Step 4: Simplify right side
    1,279,408.68x = 1,001,751,184,832.11
  5. Step 5: Solve for x
    x = 1,001,751,184,832.11/1,279,408.68
  6. Step 6: Final answer
    x = 782,979.83

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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.