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Finding the Third Proportional to 320,958 and 496,989

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Solution

The third proportional to 320,958 and 496,989 is: 769,565.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,958 : 496,989 = 496,989 : x
  2. Step 2: Convert to fraction form
    320,958/496,989 = 496,989/x
  3. Step 3: Cross multiply
    320,958x = 496,989 × 496,989
  4. Step 4: Simplify right side
    320,958x = 246,998,066,121
  5. Step 5: Solve for x
    x = 246,998,066,121/320,958
  6. Step 6: Final answer
    x = 769,565.07

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.