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Finding the Third Proportional to 990,536 and 2,170,948

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Solution

The third proportional to 990,536 and 2,170,948 is: 4,758,045.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,536 : 2,170,948 = 2,170,948 : x
  2. Step 2: Convert to fraction form
    990,536/2,170,948 = 2,170,948/x
  3. Step 3: Cross multiply
    990,536x = 2,170,948 × 2,170,948
  4. Step 4: Simplify right side
    990,536x = 4,713,015,218,704
  5. Step 5: Solve for x
    x = 4,713,015,218,704/990,536
  6. Step 6: Final answer
    x = 4,758,045.36

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.