Home / 1,987,563.88-2,742,850.92-1,128,138.49

Finding the Fourth Proportional to 1,987,563.88, 2,742,850.92 and 1,128,138.49

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Solution

The fourth proportional to 1,987,563.88, 2,742,850.92 and 1,128,138.49 is: 1,556,838.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,563.88 : 2,742,850.92 = 1,128,138.49 : x
  2. Step 2: Convert to fraction form
    1,987,563.88/2,742,850.92 = 1,128,138.49/x
  3. Step 3: Cross multiply
    1,987,563.88x = 2,742,850.92 × 1,128,138.49
  4. Step 4: Simplify right side
    1,987,563.88x = 3,094,315,695,183.91
  5. Step 5: Solve for x
    x = 3,094,315,695,183.91/1,987,563.88
  6. Step 6: Final answer
    x = 1,556,838.36

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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.