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Finding the Third Proportional to 999,738 and 2,147,220

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Solution

The third proportional to 999,738 and 2,147,220 is: 4,611,762.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,738 : 2,147,220 = 2,147,220 : x
  2. Step 2: Convert to fraction form
    999,738/2,147,220 = 2,147,220/x
  3. Step 3: Cross multiply
    999,738x = 2,147,220 × 2,147,220
  4. Step 4: Simplify right side
    999,738x = 4,610,553,728,400
  5. Step 5: Solve for x
    x = 4,610,553,728,400/999,738
  6. Step 6: Final answer
    x = 4,611,762.01

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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.