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Finding the Third Proportional to 12,691,490 and 19,065,369

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Solution

The third proportional to 12,691,490 and 19,065,369 is: 28,640,316.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691,490 : 19,065,369 = 19,065,369 : x
  2. Step 2: Convert to fraction form
    12,691,490/19,065,369 = 19,065,369/x
  3. Step 3: Cross multiply
    12,691,490x = 19,065,369 × 19,065,369
  4. Step 4: Simplify right side
    12,691,490x = 363,488,295,106,161
  5. Step 5: Solve for x
    x = 363,488,295,106,161/12,691,490
  6. Step 6: Final answer
    x = 28,640,316.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.