Home / 800,739.20-1,104,911.12-478,381.04

Finding the Fourth Proportional to 800,739.20, 1,104,911.12 and 478,381.04

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Solution

The fourth proportional to 800,739.20, 1,104,911.12 and 478,381.04 is: 660,100.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,739.20 : 1,104,911.12 = 478,381.04 : x
  2. Step 2: Convert to fraction form
    800,739.20/1,104,911.12 = 478,381.04/x
  3. Step 3: Cross multiply
    800,739.20x = 1,104,911.12 × 478,381.04
  4. Step 4: Simplify right side
    800,739.20x = 528,568,530,693.17
  5. Step 5: Solve for x
    x = 528,568,530,693.17/800,739.20
  6. Step 6: Final answer
    x = 660,100.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.