Home / 640,451.24-883,944.60-422,276.12

Finding the Fourth Proportional to 640,451.24, 883,944.60 and 422,276.12

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Solution

The fourth proportional to 640,451.24, 883,944.60 and 422,276.12 is: 582,821.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,451.24 : 883,944.60 = 422,276.12 : x
  2. Step 2: Convert to fraction form
    640,451.24/883,944.60 = 422,276.12/x
  3. Step 3: Cross multiply
    640,451.24x = 883,944.60 × 422,276.12
  4. Step 4: Simplify right side
    640,451.24x = 373,268,695,982.95
  5. Step 5: Solve for x
    x = 373,268,695,982.95/640,451.24
  6. Step 6: Final answer
    x = 582,821.41

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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.