Home / 1,376,999.39-1,900,221.39-765,136.44

Finding the Fourth Proportional to 1,376,999.39, 1,900,221.39 and 765,136.44

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Solution

The fourth proportional to 1,376,999.39, 1,900,221.39 and 765,136.44 is: 1,055,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376,999.39 : 1,900,221.39 = 765,136.44 : x
  2. Step 2: Convert to fraction form
    1,376,999.39/1,900,221.39 = 765,136.44/x
  3. Step 3: Cross multiply
    1,376,999.39x = 1,900,221.39 × 765,136.44
  4. Step 4: Simplify right side
    1,376,999.39x = 1,453,928,629,556.45
  5. Step 5: Solve for x
    x = 1,453,928,629,556.45/1,376,999.39
  6. Step 6: Final answer
    x = 1,055,867.30

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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.