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Finding the Third Proportional to 619,645 and 1,361,239

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Solution

The third proportional to 619,645 and 1,361,239 is: 2,990,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,645 : 1,361,239 = 1,361,239 : x
  2. Step 2: Convert to fraction form
    619,645/1,361,239 = 1,361,239/x
  3. Step 3: Cross multiply
    619,645x = 1,361,239 × 1,361,239
  4. Step 4: Simplify right side
    619,645x = 1,852,971,615,121
  5. Step 5: Solve for x
    x = 1,852,971,615,121/619,645
  6. Step 6: Final answer
    x = 2,990,376.13

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.