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Finding the Fourth Proportional to 922,990.80, 1,383,708.60 and 479,758.80

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Solution

The fourth proportional to 922,990.80, 1,383,708.60 and 479,758.80 is: 719,234.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,990.80 : 1,383,708.60 = 479,758.80 : x
  2. Step 2: Convert to fraction form
    922,990.80/1,383,708.60 = 479,758.80/x
  3. Step 3: Cross multiply
    922,990.80x = 1,383,708.60 × 479,758.80
  4. Step 4: Simplify right side
    922,990.80x = 663,846,377,485.68
  5. Step 5: Solve for x
    x = 663,846,377,485.68/922,990.80
  6. Step 6: Final answer
    x = 719,234.01

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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.