Home / 639,135.28-882,025.15-352,673.82

Finding the Fourth Proportional to 639,135.28, 882,025.15 and 352,673.82

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Solution

The fourth proportional to 639,135.28, 882,025.15 and 352,673.82 is: 486,700.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,135.28 : 882,025.15 = 352,673.82 : x
  2. Step 2: Convert to fraction form
    639,135.28/882,025.15 = 352,673.82/x
  3. Step 3: Cross multiply
    639,135.28x = 882,025.15 × 352,673.82
  4. Step 4: Simplify right side
    639,135.28x = 311,067,178,986.57
  5. Step 5: Solve for x
    x = 311,067,178,986.57/639,135.28
  6. Step 6: Final answer
    x = 486,700.06

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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.