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Finding the Third Proportional to 641,955 and 993,501

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Solution

The third proportional to 641,955 and 993,501 is: 1,537,559.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,955 : 993,501 = 993,501 : x
  2. Step 2: Convert to fraction form
    641,955/993,501 = 993,501/x
  3. Step 3: Cross multiply
    641,955x = 993,501 × 993,501
  4. Step 4: Simplify right side
    641,955x = 987,044,237,001
  5. Step 5: Solve for x
    x = 987,044,237,001/641,955
  6. Step 6: Final answer
    x = 1,537,559.86

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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.