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Finding the Third Proportional to 918,789,428 and 1,412,245,209

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Solution

The third proportional to 918,789,428 and 1,412,245,209 is: 2,170,722,114.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,789,428 : 1,412,245,209 = 1,412,245,209 : x
  2. Step 2: Convert to fraction form
    918,789,428/1,412,245,209 = 1,412,245,209/x
  3. Step 3: Cross multiply
    918,789,428x = 1,412,245,209 × 1,412,245,209
  4. Step 4: Simplify right side
    918,789,428x = 1,994,436,530,343,453,696
  5. Step 5: Solve for x
    x = 1,994,436,530,343,453,696/918,789,428
  6. Step 6: Final answer
    x = 2,170,722,114.95

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.