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Finding the Third Proportional to 509,688 and 712,884

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Solution

The third proportional to 509,688 and 712,884 is: 997,087.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,688 : 712,884 = 712,884 : x
  2. Step 2: Convert to fraction form
    509,688/712,884 = 712,884/x
  3. Step 3: Cross multiply
    509,688x = 712,884 × 712,884
  4. Step 4: Simplify right side
    509,688x = 508,203,597,456
  5. Step 5: Solve for x
    x = 508,203,597,456/509,688
  6. Step 6: Final answer
    x = 997,087.63

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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.