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Finding the Third Proportional to 12,743,555,247 and 19,990,877,847.75

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Solution

The third proportional to 12,743,555,247 and 19,990,877,847.75 is: 31,359,788,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743,555,247 : 19,990,877,847.75 = 19,990,877,847.75 : x
  2. Step 2: Convert to fraction form
    12,743,555,247/19,990,877,847.75 = 19,990,877,847.75/x
  3. Step 3: Cross multiply
    12,743,555,247x = 19,990,877,847.75 × 19,990,877,847.75
  4. Step 4: Simplify right side
    12,743,555,247x = 399,635,197,123,661,660,160
  5. Step 5: Solve for x
    x = 399,635,197,123,661,660,160/12,743,555,247
  6. Step 6: Final answer
    x = 31,359,788,487.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.