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Finding the Fourth Proportional to 2,986,890.48, 4,480,326.36 and 743,028.48

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Solution

The fourth proportional to 2,986,890.48, 4,480,326.36 and 743,028.48 is: 1,114,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986,890.48 : 4,480,326.36 = 743,028.48 : x
  2. Step 2: Convert to fraction form
    2,986,890.48/4,480,326.36 = 743,028.48/x
  3. Step 3: Cross multiply
    2,986,890.48x = 4,480,326.36 × 743,028.48
  4. Step 4: Simplify right side
    2,986,890.48x = 3,329,010,085,174.73
  5. Step 5: Solve for x
    x = 3,329,010,085,174.73/2,986,890.48
  6. Step 6: Final answer
    x = 1,114,540.39

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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.