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Finding the Fourth Proportional to 441,990.30, 663,661 and 423,794.46

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Solution

The fourth proportional to 441,990.30, 663,661 and 423,794.46 is: 636,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,990.30 : 663,661 = 423,794.46 : x
  2. Step 2: Convert to fraction form
    441,990.30/663,661 = 423,794.46/x
  3. Step 3: Cross multiply
    441,990.30x = 663,661 × 423,794.46
  4. Step 4: Simplify right side
    441,990.30x = 281,255,855,118.06
  5. Step 5: Solve for x
    x = 281,255,855,118.06/441,990.30
  6. Step 6: Final answer
    x = 636,339.43

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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.