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Finding the Third Proportional to 317,439 and 492,068

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Solution

The third proportional to 317,439 and 492,068 is: 762,763.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,439 : 492,068 = 492,068 : x
  2. Step 2: Convert to fraction form
    317,439/492,068 = 492,068/x
  3. Step 3: Cross multiply
    317,439x = 492,068 × 492,068
  4. Step 4: Simplify right side
    317,439x = 242,130,916,624
  5. Step 5: Solve for x
    x = 242,130,916,624/317,439
  6. Step 6: Final answer
    x = 762,763.61

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.