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Finding the Third Proportional to 621,414 and 1,331,328

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Solution

The third proportional to 621,414 and 1,331,328 is: 2,852,259.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,414 : 1,331,328 = 1,331,328 : x
  2. Step 2: Convert to fraction form
    621,414/1,331,328 = 1,331,328/x
  3. Step 3: Cross multiply
    621,414x = 1,331,328 × 1,331,328
  4. Step 4: Simplify right side
    621,414x = 1,772,434,243,584
  5. Step 5: Solve for x
    x = 1,772,434,243,584/621,414
  6. Step 6: Final answer
    x = 2,852,259.92

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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.