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Finding the Third Proportional to 513,698 and 818,115

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Solution

The third proportional to 513,698 and 818,115 is: 1,302,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,698 : 818,115 = 818,115 : x
  2. Step 2: Convert to fraction form
    513,698/818,115 = 818,115/x
  3. Step 3: Cross multiply
    513,698x = 818,115 × 818,115
  4. Step 4: Simplify right side
    513,698x = 669,312,153,225
  5. Step 5: Solve for x
    x = 669,312,153,225/513,698
  6. Step 6: Final answer
    x = 1,302,929.26

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.