Home / 812,208.20-1,218,506.70-412,910.60

Finding the Fourth Proportional to 812,208.20, 1,218,506.70 and 412,910.60

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Solution

The fourth proportional to 812,208.20, 1,218,506.70 and 412,910.60 is: 619,464.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,208.20 : 1,218,506.70 = 412,910.60 : x
  2. Step 2: Convert to fraction form
    812,208.20/1,218,506.70 = 412,910.60/x
  3. Step 3: Cross multiply
    812,208.20x = 1,218,506.70 × 412,910.60
  4. Step 4: Simplify right side
    812,208.20x = 503,134,332,601.02
  5. Step 5: Solve for x
    x = 503,134,332,601.02/812,208.20
  6. Step 6: Final answer
    x = 619,464.73

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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.