Home / 709,978,067.31-979,807,580.24-396,719,885.55

Finding the Fourth Proportional to 709,978,067.31, 979,807,580.24 and 396,719,885.55

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Solution

The fourth proportional to 709,978,067.31, 979,807,580.24 and 396,719,885.55 is: 547,494,590.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,978,067.31 : 979,807,580.24 = 396,719,885.55 : x
  2. Step 2: Convert to fraction form
    709,978,067.31/979,807,580.24 = 396,719,885.55/x
  3. Step 3: Cross multiply
    709,978,067.31x = 979,807,580.24 × 396,719,885.55
  4. Step 4: Simplify right side
    709,978,067.31x = 388,709,151,093,835,264
  5. Step 5: Solve for x
    x = 388,709,151,093,835,264/709,978,067.31
  6. Step 6: Final answer
    x = 547,494,590.31

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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.