Home / 1,291,481.82-1,782,732.24-1,109,463.48

Finding the Fourth Proportional to 1,291,481.82, 1,782,732.24 and 1,109,463.48

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Solution

The fourth proportional to 1,291,481.82, 1,782,732.24 and 1,109,463.48 is: 1,531,478.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,481.82 : 1,782,732.24 = 1,109,463.48 : x
  2. Step 2: Convert to fraction form
    1,291,481.82/1,782,732.24 = 1,109,463.48/x
  3. Step 3: Cross multiply
    1,291,481.82x = 1,782,732.24 × 1,109,463.48
  4. Step 4: Simplify right side
    1,291,481.82x = 1,977,876,314,898.60
  5. Step 5: Solve for x
    x = 1,977,876,314,898.60/1,291,481.82
  6. Step 6: Final answer
    x = 1,531,478.25

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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.