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Finding the Third Proportional to 331,562 and 509,919

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Solution

The third proportional to 331,562 and 509,919 is: 784,219.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,562 : 509,919 = 509,919 : x
  2. Step 2: Convert to fraction form
    331,562/509,919 = 509,919/x
  3. Step 3: Cross multiply
    331,562x = 509,919 × 509,919
  4. Step 4: Simplify right side
    331,562x = 260,017,386,561
  5. Step 5: Solve for x
    x = 260,017,386,561/331,562
  6. Step 6: Final answer
    x = 784,219.50

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.