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Finding the Fourth Proportional to 777,859.11, 1,166,825.62 and 378,023.57

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Solution

The fourth proportional to 777,859.11, 1,166,825.62 and 378,023.57 is: 567,053.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,859.11 : 1,166,825.62 = 378,023.57 : x
  2. Step 2: Convert to fraction form
    777,859.11/1,166,825.62 = 378,023.57/x
  3. Step 3: Cross multiply
    777,859.11x = 1,166,825.62 × 378,023.57
  4. Step 4: Simplify right side
    777,859.11x = 441,087,585,453.86
  5. Step 5: Solve for x
    x = 441,087,585,453.86/777,859.11
  6. Step 6: Final answer
    x = 567,053.31

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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.