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Finding the Third Proportional to 340,836 and 716,918

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Solution

The third proportional to 340,836 and 716,918 is: 1,507,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,836 : 716,918 = 716,918 : x
  2. Step 2: Convert to fraction form
    340,836/716,918 = 716,918/x
  3. Step 3: Cross multiply
    340,836x = 716,918 × 716,918
  4. Step 4: Simplify right side
    340,836x = 513,971,418,724
  5. Step 5: Solve for x
    x = 513,971,418,724/340,836
  6. Step 6: Final answer
    x = 1,507,972.80

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.