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Finding the Third Proportional to 621,348 and 1,331,220

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Solution

The third proportional to 621,348 and 1,331,220 is: 2,852,100.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,348 : 1,331,220 = 1,331,220 : x
  2. Step 2: Convert to fraction form
    621,348/1,331,220 = 1,331,220/x
  3. Step 3: Cross multiply
    621,348x = 1,331,220 × 1,331,220
  4. Step 4: Simplify right side
    621,348x = 1,772,146,688,400
  5. Step 5: Solve for x
    x = 1,772,146,688,400/621,348
  6. Step 6: Final answer
    x = 2,852,100.09

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.