Home / 1,298,974.80-1,943,213.40-1,123,431.60

Finding the Fourth Proportional to 1,298,974.80, 1,943,213.40 and 1,123,431.60

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Solution

The fourth proportional to 1,298,974.80, 1,943,213.40 and 1,123,431.60 is: 1,680,607.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,974.80 : 1,943,213.40 = 1,123,431.60 : x
  2. Step 2: Convert to fraction form
    1,298,974.80/1,943,213.40 = 1,123,431.60/x
  3. Step 3: Cross multiply
    1,298,974.80x = 1,943,213.40 × 1,123,431.60
  4. Step 4: Simplify right side
    1,298,974.80x = 2,183,067,339,103.44
  5. Step 5: Solve for x
    x = 2,183,067,339,103.44/1,298,974.80
  6. Step 6: Final answer
    x = 1,680,607.92

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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.