Home / 1,291,103.64-1,782,202.67-1,109,085.10

Finding the Fourth Proportional to 1,291,103.64, 1,782,202.67 and 1,109,085.10

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Solution

The fourth proportional to 1,291,103.64, 1,782,202.67 and 1,109,085.10 is: 1,530,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,103.64 : 1,782,202.67 = 1,109,085.10 : x
  2. Step 2: Convert to fraction form
    1,291,103.64/1,782,202.67 = 1,109,085.10/x
  3. Step 3: Cross multiply
    1,291,103.64x = 1,782,202.67 × 1,109,085.10
  4. Step 4: Simplify right side
    1,291,103.64x = 1,976,614,424,794.42
  5. Step 5: Solve for x
    x = 1,976,614,424,794.42/1,291,103.64
  6. Step 6: Final answer
    x = 1,530,949.46

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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.