Home / 1,284,321.35-1,926,571.78-515,819.11

Finding the Fourth Proportional to 1,284,321.35, 1,926,571.78 and 515,819.11

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Solution

The fourth proportional to 1,284,321.35, 1,926,571.78 and 515,819.11 is: 773,764.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,321.35 : 1,926,571.78 = 515,819.11 : x
  2. Step 2: Convert to fraction form
    1,284,321.35/1,926,571.78 = 515,819.11/x
  3. Step 3: Cross multiply
    1,284,321.35x = 1,926,571.78 × 515,819.11
  4. Step 4: Simplify right side
    1,284,321.35x = 993,762,538,331.62
  5. Step 5: Solve for x
    x = 993,762,538,331.62/1,284,321.35
  6. Step 6: Final answer
    x = 773,764.71

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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.