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Finding the Third Proportional to 508,740 and 809,817

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Solution

The third proportional to 508,740 and 809,817 is: 1,289,074.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,740 : 809,817 = 809,817 : x
  2. Step 2: Convert to fraction form
    508,740/809,817 = 809,817/x
  3. Step 3: Cross multiply
    508,740x = 809,817 × 809,817
  4. Step 4: Simplify right side
    508,740x = 655,803,573,489
  5. Step 5: Solve for x
    x = 655,803,573,489/508,740
  6. Step 6: Final answer
    x = 1,289,074.13

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.