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Finding the Third Proportional to 855,090 and 1,815,115.50

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Solution

The third proportional to 855,090 and 1,815,115.50 is: 3,852,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,090 : 1,815,115.50 = 1,815,115.50 : x
  2. Step 2: Convert to fraction form
    855,090/1,815,115.50 = 1,815,115.50/x
  3. Step 3: Cross multiply
    855,090x = 1,815,115.50 × 1,815,115.50
  4. Step 4: Simplify right side
    855,090x = 3,294,644,278,340.25
  5. Step 5: Solve for x
    x = 3,294,644,278,340.25/855,090
  6. Step 6: Final answer
    x = 3,852,979.54

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.