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Finding the Third Proportional to 1,990,290 and 2,999,772

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Solution

The third proportional to 1,990,290 and 2,999,772 is: 4,521,266.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,290 : 2,999,772 = 2,999,772 : x
  2. Step 2: Convert to fraction form
    1,990,290/2,999,772 = 2,999,772/x
  3. Step 3: Cross multiply
    1,990,290x = 2,999,772 × 2,999,772
  4. Step 4: Simplify right side
    1,990,290x = 8,998,632,051,984
  5. Step 5: Solve for x
    x = 8,998,632,051,984/1,990,290
  6. Step 6: Final answer
    x = 4,521,266.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.