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Finding the Fourth Proportional to 777,067, 1,072,429.30 and 454,757.88

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Solution

The fourth proportional to 777,067, 1,072,429.30 and 454,757.88 is: 627,610.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,067 : 1,072,429.30 = 454,757.88 : x
  2. Step 2: Convert to fraction form
    777,067/1,072,429.30 = 454,757.88/x
  3. Step 3: Cross multiply
    777,067x = 1,072,429.30 × 454,757.88
  4. Step 4: Simplify right side
    777,067x = 487,695,674,917.88
  5. Step 5: Solve for x
    x = 487,695,674,917.88/777,067
  6. Step 6: Final answer
    x = 627,610.84

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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.