Home / 9,198,147.78-12,690,634.10-5,329,921.50

Finding the Fourth Proportional to 9,198,147.78, 12,690,634.10 and 5,329,921.50

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Solution

The fourth proportional to 9,198,147.78, 12,690,634.10 and 5,329,921.50 is: 7,353,663.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,198,147.78 : 12,690,634.10 = 5,329,921.50 : x
  2. Step 2: Convert to fraction form
    9,198,147.78/12,690,634.10 = 5,329,921.50/x
  3. Step 3: Cross multiply
    9,198,147.78x = 12,690,634.10 × 5,329,921.50
  4. Step 4: Simplify right side
    9,198,147.78x = 67,640,083,511,573.55
  5. Step 5: Solve for x
    x = 67,640,083,511,573.55/9,198,147.78
  6. Step 6: Final answer
    x = 7,353,663.49

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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.