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Finding the Third Proportional to 392,877,960 and 855,507,560

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Solution

The third proportional to 392,877,960 and 855,507,560 is: 1,862,902,121.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,877,960 : 855,507,560 = 855,507,560 : x
  2. Step 2: Convert to fraction form
    392,877,960/855,507,560 = 855,507,560/x
  3. Step 3: Cross multiply
    392,877,960x = 855,507,560 × 855,507,560
  4. Step 4: Simplify right side
    392,877,960x = 731,893,185,217,153,536
  5. Step 5: Solve for x
    x = 731,893,185,217,153,536/392,877,960
  6. Step 6: Final answer
    x = 1,862,902,121.61

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.