Home / 820,163.70-1,230,245.55-459,964.80

Finding the Fourth Proportional to 820,163.70, 1,230,245.55 and 459,964.80

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Solution

The fourth proportional to 820,163.70, 1,230,245.55 and 459,964.80 is: 689,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,163.70 : 1,230,245.55 = 459,964.80 : x
  2. Step 2: Convert to fraction form
    820,163.70/1,230,245.55 = 459,964.80/x
  3. Step 3: Cross multiply
    820,163.70x = 1,230,245.55 × 459,964.80
  4. Step 4: Simplify right side
    820,163.70x = 565,869,648,356.64
  5. Step 5: Solve for x
    x = 565,869,648,356.64/820,163.70
  6. Step 6: Final answer
    x = 689,947.20

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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.