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Finding the Fourth Proportional to 667,222.43, 999,875.30 and 379,262.87

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Solution

The fourth proportional to 667,222.43, 999,875.30 and 379,262.87 is: 568,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,222.43 : 999,875.30 = 379,262.87 : x
  2. Step 2: Convert to fraction form
    667,222.43/999,875.30 = 379,262.87/x
  3. Step 3: Cross multiply
    667,222.43x = 999,875.30 × 379,262.87
  4. Step 4: Simplify right side
    667,222.43x = 379,215,579,367.96
  5. Step 5: Solve for x
    x = 379,215,579,367.96/667,222.43
  6. Step 6: Final answer
    x = 568,349.57

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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.