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Finding the Third Proportional to 489,253 and 688,983

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Solution

The third proportional to 489,253 and 688,983 is: 970,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,253 : 688,983 = 688,983 : x
  2. Step 2: Convert to fraction form
    489,253/688,983 = 688,983/x
  3. Step 3: Cross multiply
    489,253x = 688,983 × 688,983
  4. Step 4: Simplify right side
    489,253x = 474,697,574,289
  5. Step 5: Solve for x
    x = 474,697,574,289/489,253
  6. Step 6: Final answer
    x = 970,249.70

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.