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Finding the Fourth Proportional to 629,768.40, 944,305.92 and 430,314

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Solution

The fourth proportional to 629,768.40, 944,305.92 and 430,314 is: 645,234.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,768.40 : 944,305.92 = 430,314 : x
  2. Step 2: Convert to fraction form
    629,768.40/944,305.92 = 430,314/x
  3. Step 3: Cross multiply
    629,768.40x = 944,305.92 × 430,314
  4. Step 4: Simplify right side
    629,768.40x = 406,348,057,658.88
  5. Step 5: Solve for x
    x = 406,348,057,658.88/629,768.40
  6. Step 6: Final answer
    x = 645,234.12

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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.