Home / 709,978,067.06-979,807,579.89-396,719,885.30

Finding the Fourth Proportional to 709,978,067.06, 979,807,579.89 and 396,719,885.30

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Solution

The fourth proportional to 709,978,067.06, 979,807,579.89 and 396,719,885.30 is: 547,494,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,978,067.06 : 979,807,579.89 = 396,719,885.30 : x
  2. Step 2: Convert to fraction form
    709,978,067.06/979,807,579.89 = 396,719,885.30/x
  3. Step 3: Cross multiply
    709,978,067.06x = 979,807,579.89 × 396,719,885.30
  4. Step 4: Simplify right side
    709,978,067.06x = 388,709,150,710,031,424
  5. Step 5: Solve for x
    x = 388,709,150,710,031,424/709,978,067.06
  6. Step 6: Final answer
    x = 547,494,589.97

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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.