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Finding the Third Proportional to 554,289 and 855,855

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Solution

The third proportional to 554,289 and 855,855 is: 1,321,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,289 : 855,855 = 855,855 : x
  2. Step 2: Convert to fraction form
    554,289/855,855 = 855,855/x
  3. Step 3: Cross multiply
    554,289x = 855,855 × 855,855
  4. Step 4: Simplify right side
    554,289x = 732,487,781,025
  5. Step 5: Solve for x
    x = 732,487,781,025/554,289
  6. Step 6: Final answer
    x = 1,321,490.74

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.