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Finding the Third Proportional to 687,605 and 1,625,808

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Solution

The third proportional to 687,605 and 1,625,808 is: 3,844,142.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,605 : 1,625,808 = 1,625,808 : x
  2. Step 2: Convert to fraction form
    687,605/1,625,808 = 1,625,808/x
  3. Step 3: Cross multiply
    687,605x = 1,625,808 × 1,625,808
  4. Step 4: Simplify right side
    687,605x = 2,643,251,652,864
  5. Step 5: Solve for x
    x = 2,643,251,652,864/687,605
  6. Step 6: Final answer
    x = 3,844,142.57

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.