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Finding the Third Proportional to 356,660 and 554,038

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Solution

The third proportional to 356,660 and 554,038 is: 860,646.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,660 : 554,038 = 554,038 : x
  2. Step 2: Convert to fraction form
    356,660/554,038 = 554,038/x
  3. Step 3: Cross multiply
    356,660x = 554,038 × 554,038
  4. Step 4: Simplify right side
    356,660x = 306,958,105,444
  5. Step 5: Solve for x
    x = 306,958,105,444/356,660
  6. Step 6: Final answer
    x = 860,646.29

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.