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Finding the Third Proportional to 318,044 and 445,780

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Solution

The third proportional to 318,044 and 445,780 is: 624,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,044 : 445,780 = 445,780 : x
  2. Step 2: Convert to fraction form
    318,044/445,780 = 445,780/x
  3. Step 3: Cross multiply
    318,044x = 445,780 × 445,780
  4. Step 4: Simplify right side
    318,044x = 198,719,808,400
  5. Step 5: Solve for x
    x = 198,719,808,400/318,044
  6. Step 6: Final answer
    x = 624,818.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.