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Finding the Third Proportional to 355,317 and 531,288

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Solution

The third proportional to 355,317 and 531,288 is: 794,408.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,317 : 531,288 = 531,288 : x
  2. Step 2: Convert to fraction form
    355,317/531,288 = 531,288/x
  3. Step 3: Cross multiply
    355,317x = 531,288 × 531,288
  4. Step 4: Simplify right side
    355,317x = 282,266,938,944
  5. Step 5: Solve for x
    x = 282,266,938,944/355,317
  6. Step 6: Final answer
    x = 794,408.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.