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Finding the Third Proportional to 310,772 and 680,602

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Solution

The third proportional to 310,772 and 680,602 is: 1,490,543.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,772 : 680,602 = 680,602 : x
  2. Step 2: Convert to fraction form
    310,772/680,602 = 680,602/x
  3. Step 3: Cross multiply
    310,772x = 680,602 × 680,602
  4. Step 4: Simplify right side
    310,772x = 463,219,082,404
  5. Step 5: Solve for x
    x = 463,219,082,404/310,772
  6. Step 6: Final answer
    x = 1,490,543.17

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.