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Finding the Third Proportional to 340,691 and 716,686

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Solution

The third proportional to 340,691 and 716,686 is: 1,507,638.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,691 : 716,686 = 716,686 : x
  2. Step 2: Convert to fraction form
    340,691/716,686 = 716,686/x
  3. Step 3: Cross multiply
    340,691x = 716,686 × 716,686
  4. Step 4: Simplify right side
    340,691x = 513,638,822,596
  5. Step 5: Solve for x
    x = 513,638,822,596/340,691
  6. Step 6: Final answer
    x = 1,507,638.37

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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.