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Finding the Third Proportional to 354,931 and 768,878

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Solution

The third proportional to 354,931 and 768,878 is: 1,665,600.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,931 : 768,878 = 768,878 : x
  2. Step 2: Convert to fraction form
    354,931/768,878 = 768,878/x
  3. Step 3: Cross multiply
    354,931x = 768,878 × 768,878
  4. Step 4: Simplify right side
    354,931x = 591,173,378,884
  5. Step 5: Solve for x
    x = 591,173,378,884/354,931
  6. Step 6: Final answer
    x = 1,665,600.86

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.