Home / 816,961.37-1,225,447.47-284,480.60

Finding the Fourth Proportional to 816,961.37, 1,225,447.47 and 284,480.60

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Solution

The fourth proportional to 816,961.37, 1,225,447.47 and 284,480.60 is: 426,722.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,961.37 : 1,225,447.47 = 284,480.60 : x
  2. Step 2: Convert to fraction form
    816,961.37/1,225,447.47 = 284,480.60/x
  3. Step 3: Cross multiply
    816,961.37x = 1,225,447.47 × 284,480.60
  4. Step 4: Simplify right side
    816,961.37x = 348,616,025,406.85
  5. Step 5: Solve for x
    x = 348,616,025,406.85/816,961.37
  6. Step 6: Final answer
    x = 426,722.78

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Double scale
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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.