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Finding the Fourth Proportional to 839,956.80, 1,257,310.80 and 603,760.80

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Solution

The fourth proportional to 839,956.80, 1,257,310.80 and 603,760.80 is: 903,754.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,956.80 : 1,257,310.80 = 603,760.80 : x
  2. Step 2: Convert to fraction form
    839,956.80/1,257,310.80 = 603,760.80/x
  3. Step 3: Cross multiply
    839,956.80x = 1,257,310.80 × 603,760.80
  4. Step 4: Simplify right side
    839,956.80x = 759,114,974,456.64
  5. Step 5: Solve for x
    x = 759,114,974,456.64/839,956.80
  6. Step 6: Final answer
    x = 903,754.78

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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.