Home / 858,501.60-1,287,169.20-325,942.80

Finding the Fourth Proportional to 858,501.60, 1,287,169.20 and 325,942.80

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Solution

The fourth proportional to 858,501.60, 1,287,169.20 and 325,942.80 is: 488,692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,501.60 : 1,287,169.20 = 325,942.80 : x
  2. Step 2: Convert to fraction form
    858,501.60/1,287,169.20 = 325,942.80/x
  3. Step 3: Cross multiply
    858,501.60x = 1,287,169.20 × 325,942.80
  4. Step 4: Simplify right side
    858,501.60x = 419,543,533,121.76
  5. Step 5: Solve for x
    x = 419,543,533,121.76/858,501.60
  6. Step 6: Final answer
    x = 488,692.78

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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.