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Finding the Fourth Proportional to 636,639.84, 954,714.30 and 281,458.92

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Solution

The fourth proportional to 636,639.84, 954,714.30 and 281,458.92 is: 422,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,639.84 : 954,714.30 = 281,458.92 : x
  2. Step 2: Convert to fraction form
    636,639.84/954,714.30 = 281,458.92/x
  3. Step 3: Cross multiply
    636,639.84x = 954,714.30 × 281,458.92
  4. Step 4: Simplify right side
    636,639.84x = 268,712,855,786.56
  5. Step 5: Solve for x
    x = 268,712,855,786.56/636,639.84
  6. Step 6: Final answer
    x = 422,079.86

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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.