Home / 810,745.88-1,213,105.55-509,819.54

Finding the Fourth Proportional to 810,745.88, 1,213,105.55 and 509,819.54

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Solution

The fourth proportional to 810,745.88, 1,213,105.55 and 509,819.54 is: 762,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,745.88 : 1,213,105.55 = 509,819.54 : x
  2. Step 2: Convert to fraction form
    810,745.88/1,213,105.55 = 509,819.54/x
  3. Step 3: Cross multiply
    810,745.88x = 1,213,105.55 × 509,819.54
  4. Step 4: Simplify right side
    810,745.88x = 618,464,904,857.82
  5. Step 5: Solve for x
    x = 618,464,904,857.82/810,745.88
  6. Step 6: Final answer
    x = 762,834.48

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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.