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Finding the Third Proportional to 555,435 and 1,211,220

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Solution

The third proportional to 555,435 and 1,211,220 is: 2,641,270.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,435 : 1,211,220 = 1,211,220 : x
  2. Step 2: Convert to fraction form
    555,435/1,211,220 = 1,211,220/x
  3. Step 3: Cross multiply
    555,435x = 1,211,220 × 1,211,220
  4. Step 4: Simplify right side
    555,435x = 1,467,053,888,400
  5. Step 5: Solve for x
    x = 1,467,053,888,400/555,435
  6. Step 6: Final answer
    x = 2,641,270.15

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.