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Finding the Third Proportional to 447,908,718 and 640,510,231

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Solution

The third proportional to 447,908,718 and 640,510,231 is: 915,930,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,908,718 : 640,510,231 = 640,510,231 : x
  2. Step 2: Convert to fraction form
    447,908,718/640,510,231 = 640,510,231/x
  3. Step 3: Cross multiply
    447,908,718x = 640,510,231 × 640,510,231
  4. Step 4: Simplify right side
    447,908,718x = 410,253,356,015,673,344
  5. Step 5: Solve for x
    x = 410,253,356,015,673,344/447,908,718
  6. Step 6: Final answer
    x = 915,930,723.22

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.