Home / 639,178.45-958,093.63-212,600.36

Finding the Fourth Proportional to 639,178.45, 958,093.63 and 212,600.36

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Solution

The fourth proportional to 639,178.45, 958,093.63 and 212,600.36 is: 318,676.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,178.45 : 958,093.63 = 212,600.36 : x
  2. Step 2: Convert to fraction form
    639,178.45/958,093.63 = 212,600.36/x
  3. Step 3: Cross multiply
    639,178.45x = 958,093.63 × 212,600.36
  4. Step 4: Simplify right side
    639,178.45x = 203,691,050,651.71
  5. Step 5: Solve for x
    x = 203,691,050,651.71/639,178.45
  6. Step 6: Final answer
    x = 318,676.34

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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.