Home / 867,847.20-1,301,187.60-394,288.80

Finding the Fourth Proportional to 867,847.20, 1,301,187.60 and 394,288.80

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Solution

The fourth proportional to 867,847.20, 1,301,187.60 and 394,288.80 is: 591,168.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,847.20 : 1,301,187.60 = 394,288.80 : x
  2. Step 2: Convert to fraction form
    867,847.20/1,301,187.60 = 394,288.80/x
  3. Step 3: Cross multiply
    867,847.20x = 1,301,187.60 × 394,288.80
  4. Step 4: Simplify right side
    867,847.20x = 513,043,697,378.88
  5. Step 5: Solve for x
    x = 513,043,697,378.88/867,847.20
  6. Step 6: Final answer
    x = 591,168.23

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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.