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Finding the Third Proportional to 777,690 and 1,617,457

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Solution

The third proportional to 777,690 and 1,617,457 is: 3,364,023.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,690 : 1,617,457 = 1,617,457 : x
  2. Step 2: Convert to fraction form
    777,690/1,617,457 = 1,617,457/x
  3. Step 3: Cross multiply
    777,690x = 1,617,457 × 1,617,457
  4. Step 4: Simplify right side
    777,690x = 2,616,167,146,849
  5. Step 5: Solve for x
    x = 2,616,167,146,849/777,690
  6. Step 6: Final answer
    x = 3,364,023.13

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.