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Finding the Fourth Proportional to 2,652,945.82, 3,979,913.54 and 855,641.88

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Solution

The fourth proportional to 2,652,945.82, 3,979,913.54 and 855,641.88 is: 1,283,622.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652,945.82 : 3,979,913.54 = 855,641.88 : x
  2. Step 2: Convert to fraction form
    2,652,945.82/3,979,913.54 = 855,641.88/x
  3. Step 3: Cross multiply
    2,652,945.82x = 3,979,913.54 × 855,641.88
  4. Step 4: Simplify right side
    2,652,945.82x = 3,405,380,699,324.85
  5. Step 5: Solve for x
    x = 3,405,380,699,324.85/2,652,945.82
  6. Step 6: Final answer
    x = 1,283,622.41

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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.