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Finding the Third Proportional to 508,509 and 690,612.75

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Solution

The third proportional to 508,509 and 690,612.75 is: 937,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,509 : 690,612.75 = 690,612.75 : x
  2. Step 2: Convert to fraction form
    508,509/690,612.75 = 690,612.75/x
  3. Step 3: Cross multiply
    508,509x = 690,612.75 × 690,612.75
  4. Step 4: Simplify right side
    508,509x = 476,945,970,462.56
  5. Step 5: Solve for x
    x = 476,945,970,462.56/508,509
  6. Step 6: Final answer
    x = 937,930.24

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.