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Finding the Third Proportional to 355,377 and 838,921

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Solution

The third proportional to 355,377 and 838,921 is: 1,980,399.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,377 : 838,921 = 838,921 : x
  2. Step 2: Convert to fraction form
    355,377/838,921 = 838,921/x
  3. Step 3: Cross multiply
    355,377x = 838,921 × 838,921
  4. Step 4: Simplify right side
    355,377x = 703,788,444,241
  5. Step 5: Solve for x
    x = 703,788,444,241/355,377
  6. Step 6: Final answer
    x = 1,980,399.53

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.