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Finding the Third Proportional to 931,977 and 1,999,890

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Solution

The third proportional to 931,977 and 1,999,890 is: 4,291,479.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,977 : 1,999,890 = 1,999,890 : x
  2. Step 2: Convert to fraction form
    931,977/1,999,890 = 1,999,890/x
  3. Step 3: Cross multiply
    931,977x = 1,999,890 × 1,999,890
  4. Step 4: Simplify right side
    931,977x = 3,999,560,012,100
  5. Step 5: Solve for x
    x = 3,999,560,012,100/931,977
  6. Step 6: Final answer
    x = 4,291,479.31

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.