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Finding the Third Proportional to 999,492 and 2,158,567

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Solution

The third proportional to 999,492 and 2,158,567 is: 4,661,779.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,492 : 2,158,567 = 2,158,567 : x
  2. Step 2: Convert to fraction form
    999,492/2,158,567 = 2,158,567/x
  3. Step 3: Cross multiply
    999,492x = 2,158,567 × 2,158,567
  4. Step 4: Simplify right side
    999,492x = 4,659,411,493,489
  5. Step 5: Solve for x
    x = 4,659,411,493,489/999,492
  6. Step 6: Final answer
    x = 4,661,779.68

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.