Home / 820,724.22-1,228,819.14-420,503.22

Finding the Fourth Proportional to 820,724.22, 1,228,819.14 and 420,503.22

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Solution

The fourth proportional to 820,724.22, 1,228,819.14 and 420,503.22 is: 629,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,724.22 : 1,228,819.14 = 420,503.22 : x
  2. Step 2: Convert to fraction form
    820,724.22/1,228,819.14 = 420,503.22/x
  3. Step 3: Cross multiply
    820,724.22x = 1,228,819.14 × 420,503.22
  4. Step 4: Simplify right side
    820,724.22x = 516,722,405,167.63
  5. Step 5: Solve for x
    x = 516,722,405,167.63/820,724.22
  6. Step 6: Final answer
    x = 629,593.22

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1.5x scale

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.