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Finding the Third Proportional to 328,036 and 490,345

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Solution

The third proportional to 328,036 and 490,345 is: 732,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,036 : 490,345 = 490,345 : x
  2. Step 2: Convert to fraction form
    328,036/490,345 = 490,345/x
  3. Step 3: Cross multiply
    328,036x = 490,345 × 490,345
  4. Step 4: Simplify right side
    328,036x = 240,438,219,025
  5. Step 5: Solve for x
    x = 240,438,219,025/328,036
  6. Step 6: Final answer
    x = 732,962.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.