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Finding the Third Proportional to 287,762,656 and 445,395,108

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Solution

The third proportional to 287,762,656 and 445,395,108 is: 689,376,463.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,762,656 : 445,395,108 = 445,395,108 : x
  2. Step 2: Convert to fraction form
    287,762,656/445,395,108 = 445,395,108/x
  3. Step 3: Cross multiply
    287,762,656x = 445,395,108 × 445,395,108
  4. Step 4: Simplify right side
    287,762,656x = 198,376,802,230,331,648
  5. Step 5: Solve for x
    x = 198,376,802,230,331,648/287,762,656
  6. Step 6: Final answer
    x = 689,376,463.88

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.