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Finding the Third Proportional to 318,665,495.25 and 685,758,609

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Solution

The third proportional to 318,665,495.25 and 685,758,609 is: 1,475,732,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,665,495.25 : 685,758,609 = 685,758,609 : x
  2. Step 2: Convert to fraction form
    318,665,495.25/685,758,609 = 685,758,609/x
  3. Step 3: Cross multiply
    318,665,495.25x = 685,758,609 × 685,758,609
  4. Step 4: Simplify right side
    318,665,495.25x = 470,264,869,817,614,912
  5. Step 5: Solve for x
    x = 470,264,869,817,614,912/318,665,495.25
  6. Step 6: Final answer
    x = 1,475,732,003.71

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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.