Home / 442,922.20-664,383.30-307,619.80

Finding the Fourth Proportional to 442,922.20, 664,383.30 and 307,619.80

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Solution

The fourth proportional to 442,922.20, 664,383.30 and 307,619.80 is: 461,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,922.20 : 664,383.30 = 307,619.80 : x
  2. Step 2: Convert to fraction form
    442,922.20/664,383.30 = 307,619.80/x
  3. Step 3: Cross multiply
    442,922.20x = 664,383.30 × 307,619.80
  4. Step 4: Simplify right side
    442,922.20x = 204,377,457,869.34
  5. Step 5: Solve for x
    x = 204,377,457,869.34/442,922.20
  6. Step 6: Final answer
    x = 461,429.70

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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.