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Finding the Third Proportional to 509,766 and 712,989

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Solution

The third proportional to 509,766 and 712,989 is: 997,228.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,766 : 712,989 = 712,989 : x
  2. Step 2: Convert to fraction form
    509,766/712,989 = 712,989/x
  3. Step 3: Cross multiply
    509,766x = 712,989 × 712,989
  4. Step 4: Simplify right side
    509,766x = 508,353,314,121
  5. Step 5: Solve for x
    x = 508,353,314,121/509,766
  6. Step 6: Final answer
    x = 997,228.76

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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.