Home / 3,171,789.78-4,377,074-1,721,485.05

Finding the Fourth Proportional to 3,171,789.78, 4,377,074 and 1,721,485.05

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Solution

The fourth proportional to 3,171,789.78, 4,377,074 and 1,721,485.05 is: 2,375,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171,789.78 : 4,377,074 = 1,721,485.05 : x
  2. Step 2: Convert to fraction form
    3,171,789.78/4,377,074 = 1,721,485.05/x
  3. Step 3: Cross multiply
    3,171,789.78x = 4,377,074 × 1,721,485.05
  4. Step 4: Simplify right side
    3,171,789.78x = 7,535,067,453,743.70
  5. Step 5: Solve for x
    x = 7,535,067,453,743.70/3,171,789.78
  6. Step 6: Final answer
    x = 2,375,651.60

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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.