Home / 1,387,180.80-2,077,660.80-1,200,556.80

Finding the Fourth Proportional to 1,387,180.80, 2,077,660.80 and 1,200,556.80

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Solution

The fourth proportional to 1,387,180.80, 2,077,660.80 and 1,200,556.80 is: 1,798,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,180.80 : 2,077,660.80 = 1,200,556.80 : x
  2. Step 2: Convert to fraction form
    1,387,180.80/2,077,660.80 = 1,200,556.80/x
  3. Step 3: Cross multiply
    1,387,180.80x = 2,077,660.80 × 1,200,556.80
  4. Step 4: Simplify right side
    1,387,180.80x = 2,494,349,801,533.44
  5. Step 5: Solve for x
    x = 2,494,349,801,533.44/1,387,180.80
  6. Step 6: Final answer
    x = 1,798,143.26

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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.