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Finding the Third Proportional to 187,389,486 and 279,981,972

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Solution

The third proportional to 187,389,486 and 279,981,972 is: 418,326,056.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,389,486 : 279,981,972 = 279,981,972 : x
  2. Step 2: Convert to fraction form
    187,389,486/279,981,972 = 279,981,972/x
  3. Step 3: Cross multiply
    187,389,486x = 279,981,972 × 279,981,972
  4. Step 4: Simplify right side
    187,389,486x = 78,389,904,645,008,784
  5. Step 5: Solve for x
    x = 78,389,904,645,008,784/187,389,486
  6. Step 6: Final answer
    x = 418,326,056.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.