Home / 639,135.78-882,025.69-352,674.31

Finding the Fourth Proportional to 639,135.78, 882,025.69 and 352,674.31

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Solution

The fourth proportional to 639,135.78, 882,025.69 and 352,674.31 is: 486,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,135.78 : 882,025.69 = 352,674.31 : x
  2. Step 2: Convert to fraction form
    639,135.78/882,025.69 = 352,674.31/x
  3. Step 3: Cross multiply
    639,135.78x = 882,025.69 × 352,674.31
  4. Step 4: Simplify right side
    639,135.78x = 311,067,801,623.02
  5. Step 5: Solve for x
    x = 311,067,801,623.02/639,135.78
  6. Step 6: Final answer
    x = 486,700.65

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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.