Home / 777,986.28-1,167,015.87-378,150.43

Finding the Fourth Proportional to 777,986.28, 1,167,015.87 and 378,150.43

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Solution

The fourth proportional to 777,986.28, 1,167,015.87 and 378,150.43 is: 567,243.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,986.28 : 1,167,015.87 = 378,150.43 : x
  2. Step 2: Convert to fraction form
    777,986.28/1,167,015.87 = 378,150.43/x
  3. Step 3: Cross multiply
    777,986.28x = 1,167,015.87 × 378,150.43
  4. Step 4: Simplify right side
    777,986.28x = 441,307,554,556.80
  5. Step 5: Solve for x
    x = 441,307,554,556.80/777,986.28
  6. Step 6: Final answer
    x = 567,243.37

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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.