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Finding the Third Proportional to 618,448 and 1,330,389

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Solution

The third proportional to 618,448 and 1,330,389 is: 2,861,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,448 : 1,330,389 = 1,330,389 : x
  2. Step 2: Convert to fraction form
    618,448/1,330,389 = 1,330,389/x
  3. Step 3: Cross multiply
    618,448x = 1,330,389 × 1,330,389
  4. Step 4: Simplify right side
    618,448x = 1,769,934,891,321
  5. Step 5: Solve for x
    x = 1,769,934,891,321/618,448
  6. Step 6: Final answer
    x = 2,861,897.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.