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Finding the Third Proportional to 509,649 and 712,901.25

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Solution

The third proportional to 509,649 and 712,901.25 is: 997,212.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,649 : 712,901.25 = 712,901.25 : x
  2. Step 2: Convert to fraction form
    509,649/712,901.25 = 712,901.25/x
  3. Step 3: Cross multiply
    509,649x = 712,901.25 × 712,901.25
  4. Step 4: Simplify right side
    509,649x = 508,228,192,251.56
  5. Step 5: Solve for x
    x = 508,228,192,251.56/509,649
  6. Step 6: Final answer
    x = 997,212.18

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.