Home / 721,879,974.36-1,082,691,963.72-328,314,615.84

Finding the Fourth Proportional to 721,879,974.36, 1,082,691,963.72 and 328,314,615.84

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Solution

The fourth proportional to 721,879,974.36, 1,082,691,963.72 and 328,314,615.84 is: 492,413,709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,879,974.36 : 1,082,691,963.72 = 328,314,615.84 : x
  2. Step 2: Convert to fraction form
    721,879,974.36/1,082,691,963.72 = 328,314,615.84/x
  3. Step 3: Cross multiply
    721,879,974.36x = 1,082,691,963.72 × 328,314,615.84
  4. Step 4: Simplify right side
    721,879,974.36x = 355,463,596,141,787,008
  5. Step 5: Solve for x
    x = 355,463,596,141,787,008/721,879,974.36
  6. Step 6: Final answer
    x = 492,413,709.71

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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.