Home / 820,506.40-1,231,105.20-446,797.60

Finding the Fourth Proportional to 820,506.40, 1,231,105.20 and 446,797.60

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Solution

The fourth proportional to 820,506.40, 1,231,105.20 and 446,797.60 is: 670,384.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,506.40 : 1,231,105.20 = 446,797.60 : x
  2. Step 2: Convert to fraction form
    820,506.40/1,231,105.20 = 446,797.60/x
  3. Step 3: Cross multiply
    820,506.40x = 1,231,105.20 × 446,797.60
  4. Step 4: Simplify right side
    820,506.40x = 550,054,848,707.52
  5. Step 5: Solve for x
    x = 550,054,848,707.52/820,506.40
  6. Step 6: Final answer
    x = 670,384.59

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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.