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Finding the Third Proportional to 742,439 and 1,330,487

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Solution

The third proportional to 742,439 and 1,330,487 is: 2,384,297.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,439 : 1,330,487 = 1,330,487 : x
  2. Step 2: Convert to fraction form
    742,439/1,330,487 = 1,330,487/x
  3. Step 3: Cross multiply
    742,439x = 1,330,487 × 1,330,487
  4. Step 4: Simplify right side
    742,439x = 1,770,195,657,169
  5. Step 5: Solve for x
    x = 1,770,195,657,169/742,439
  6. Step 6: Final answer
    x = 2,384,297.78

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.