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Finding the Third Proportional to 1,247,890 and 1,916,907

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Solution

The third proportional to 1,247,890 and 1,916,907 is: 2,944,596.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,890 : 1,916,907 = 1,916,907 : x
  2. Step 2: Convert to fraction form
    1,247,890/1,916,907 = 1,916,907/x
  3. Step 3: Cross multiply
    1,247,890x = 1,916,907 × 1,916,907
  4. Step 4: Simplify right side
    1,247,890x = 3,674,532,446,649
  5. Step 5: Solve for x
    x = 3,674,532,446,649/1,247,890
  6. Step 6: Final answer
    x = 2,944,596.44

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.