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Finding the Third Proportional to 355,579 and 540,279

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Solution

The third proportional to 355,579 and 540,279 is: 820,918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,579 : 540,279 = 540,279 : x
  2. Step 2: Convert to fraction form
    355,579/540,279 = 540,279/x
  3. Step 3: Cross multiply
    355,579x = 540,279 × 540,279
  4. Step 4: Simplify right side
    355,579x = 291,901,397,841
  5. Step 5: Solve for x
    x = 291,901,397,841/355,579
  6. Step 6: Final answer
    x = 820,918.55

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.