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Finding the Third Proportional to 412,865.50 and 581,389.50

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Solution

The third proportional to 412,865.50 and 581,389.50 is: 818,701.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,865.50 : 581,389.50 = 581,389.50 : x
  2. Step 2: Convert to fraction form
    412,865.50/581,389.50 = 581,389.50/x
  3. Step 3: Cross multiply
    412,865.50x = 581,389.50 × 581,389.50
  4. Step 4: Simplify right side
    412,865.50x = 338,013,750,710.25
  5. Step 5: Solve for x
    x = 338,013,750,710.25/412,865.50
  6. Step 6: Final answer
    x = 818,701.85

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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.