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Finding the Third Proportional to 412,811 and 581,328

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Solution

The third proportional to 412,811 and 581,328 is: 818,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,811 : 581,328 = 581,328 : x
  2. Step 2: Convert to fraction form
    412,811/581,328 = 581,328/x
  3. Step 3: Cross multiply
    412,811x = 581,328 × 581,328
  4. Step 4: Simplify right side
    412,811x = 337,942,243,584
  5. Step 5: Solve for x
    x = 337,942,243,584/412,811
  6. Step 6: Final answer
    x = 818,636.72

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.