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Finding the Third Proportional to 355,080 and 479,892

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Solution

The third proportional to 355,080 and 479,892 is: 648,575.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,080 : 479,892 = 479,892 : x
  2. Step 2: Convert to fraction form
    355,080/479,892 = 479,892/x
  3. Step 3: Cross multiply
    355,080x = 479,892 × 479,892
  4. Step 4: Simplify right side
    355,080x = 230,296,331,664
  5. Step 5: Solve for x
    x = 230,296,331,664/355,080
  6. Step 6: Final answer
    x = 648,575.90

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.