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Finding the Fourth Proportional to 621,898.36, 932,793.77 and 378,676.62

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Solution

The fourth proportional to 621,898.36, 932,793.77 and 378,676.62 is: 567,982.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,898.36 : 932,793.77 = 378,676.62 : x
  2. Step 2: Convert to fraction form
    621,898.36/932,793.77 = 378,676.62/x
  3. Step 3: Cross multiply
    621,898.36x = 932,793.77 × 378,676.62
  4. Step 4: Simplify right side
    621,898.36x = 353,227,192,927.35
  5. Step 5: Solve for x
    x = 353,227,192,927.35/621,898.36
  6. Step 6: Final answer
    x = 567,982.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.