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Finding the Third Proportional to 308,287,470 and 445,422,137

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Solution

The third proportional to 308,287,470 and 445,422,137 is: 643,558,040.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,287,470 : 445,422,137 = 445,422,137 : x
  2. Step 2: Convert to fraction form
    308,287,470/445,422,137 = 445,422,137/x
  3. Step 3: Cross multiply
    308,287,470x = 445,422,137 × 445,422,137
  4. Step 4: Simplify right side
    308,287,470x = 198,400,880,129,646,784
  5. Step 5: Solve for x
    x = 198,400,880,129,646,784/308,287,470
  6. Step 6: Final answer
    x = 643,558,040.58

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These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.