Home / 639,936.28-959,799.36-213,475.38

Finding the Fourth Proportional to 639,936.28, 959,799.36 and 213,475.38

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Solution

The fourth proportional to 639,936.28, 959,799.36 and 213,475.38 is: 320,178.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,936.28 : 959,799.36 = 213,475.38 : x
  2. Step 2: Convert to fraction form
    639,936.28/959,799.36 = 213,475.38/x
  3. Step 3: Cross multiply
    639,936.28x = 959,799.36 × 213,475.38
  4. Step 4: Simplify right side
    639,936.28x = 204,893,533,099.76
  5. Step 5: Solve for x
    x = 204,893,533,099.76/639,936.28
  6. Step 6: Final answer
    x = 320,178.02

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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.