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Finding the Third Proportional to 345,661,990 and 505,369,912

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Solution

The third proportional to 345,661,990 and 505,369,912 is: 738,868,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,661,990 : 505,369,912 = 505,369,912 : x
  2. Step 2: Convert to fraction form
    345,661,990/505,369,912 = 505,369,912/x
  3. Step 3: Cross multiply
    345,661,990x = 505,369,912 × 505,369,912
  4. Step 4: Simplify right side
    345,661,990x = 255,398,747,954,887,744
  5. Step 5: Solve for x
    x = 255,398,747,954,887,744/345,661,990
  6. Step 6: Final answer
    x = 738,868,476.56

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.