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Finding the Fourth Proportional to 1,067,679.56, 1,471,602.12 and 809,471

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Solution

The fourth proportional to 1,067,679.56, 1,471,602.12 and 809,471 is: 1,115,708.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067,679.56 : 1,471,602.12 = 809,471 : x
  2. Step 2: Convert to fraction form
    1,067,679.56/1,471,602.12 = 809,471/x
  3. Step 3: Cross multiply
    1,067,679.56x = 1,471,602.12 × 809,471
  4. Step 4: Simplify right side
    1,067,679.56x = 1,191,219,239,678.52
  5. Step 5: Solve for x
    x = 1,191,219,239,678.52/1,067,679.56
  6. Step 6: Final answer
    x = 1,115,708.57

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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.