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Finding the Fourth Proportional to 892,978.34, 1,339,361.39 and 293,790.89

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Solution

The fourth proportional to 892,978.34, 1,339,361.39 and 293,790.89 is: 440,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,978.34 : 1,339,361.39 = 293,790.89 : x
  2. Step 2: Convert to fraction form
    892,978.34/1,339,361.39 = 293,790.89/x
  3. Step 3: Cross multiply
    892,978.34x = 1,339,361.39 × 293,790.89
  4. Step 4: Simplify right side
    892,978.34x = 393,492,178,882.62
  5. Step 5: Solve for x
    x = 393,492,178,882.62/892,978.34
  6. Step 6: Final answer
    x = 440,651.43

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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.