Home / 639,204.12-957,625.20-322,905.60

Finding the Fourth Proportional to 639,204.12, 957,625.20 and 322,905.60

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Solution

The fourth proportional to 639,204.12, 957,625.20 and 322,905.60 is: 483,761.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,204.12 : 957,625.20 = 322,905.60 : x
  2. Step 2: Convert to fraction form
    639,204.12/957,625.20 = 322,905.60/x
  3. Step 3: Cross multiply
    639,204.12x = 957,625.20 × 322,905.60
  4. Step 4: Simplify right side
    639,204.12x = 309,222,539,781.12
  5. Step 5: Solve for x
    x = 309,222,539,781.12/639,204.12
  6. Step 6: Final answer
    x = 483,761.81

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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.