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Finding the Third Proportional to 423,766 and 628,318

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Solution

The third proportional to 423,766 and 628,318 is: 931,607.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,766 : 628,318 = 628,318 : x
  2. Step 2: Convert to fraction form
    423,766/628,318 = 628,318/x
  3. Step 3: Cross multiply
    423,766x = 628,318 × 628,318
  4. Step 4: Simplify right side
    423,766x = 394,783,509,124
  5. Step 5: Solve for x
    x = 394,783,509,124/423,766
  6. Step 6: Final answer
    x = 931,607.32

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.