Home / 639,201.12-957,620.70-322,902.60

Finding the Fourth Proportional to 639,201.12, 957,620.70 and 322,902.60

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Solution

The fourth proportional to 639,201.12, 957,620.70 and 322,902.60 is: 483,757.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,201.12 : 957,620.70 = 322,902.60 : x
  2. Step 2: Convert to fraction form
    639,201.12/957,620.70 = 322,902.60/x
  3. Step 3: Cross multiply
    639,201.12x = 957,620.70 × 322,902.60
  4. Step 4: Simplify right side
    639,201.12x = 309,218,213,843.82
  5. Step 5: Solve for x
    x = 309,218,213,843.82/639,201.12
  6. Step 6: Final answer
    x = 483,757.31

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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.