Home / 639,205.12-957,626.70-322,906.60

Finding the Fourth Proportional to 639,205.12, 957,626.70 and 322,906.60

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Solution

The fourth proportional to 639,205.12, 957,626.70 and 322,906.60 is: 483,763.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,205.12 : 957,626.70 = 322,906.60 : x
  2. Step 2: Convert to fraction form
    639,205.12/957,626.70 = 322,906.60/x
  3. Step 3: Cross multiply
    639,205.12x = 957,626.70 × 322,906.60
  4. Step 4: Simplify right side
    639,205.12x = 309,223,981,766.22
  5. Step 5: Solve for x
    x = 309,223,981,766.22/639,205.12
  6. Step 6: Final answer
    x = 483,763.31

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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.