Home / 639,045.18-958,592.07-212,619.06

Finding the Fourth Proportional to 639,045.18, 958,592.07 and 212,619.06

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Solution

The fourth proportional to 639,045.18, 958,592.07 and 212,619.06 is: 318,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,045.18 : 958,592.07 = 212,619.06 : x
  2. Step 2: Convert to fraction form
    639,045.18/958,592.07 = 212,619.06/x
  3. Step 3: Cross multiply
    639,045.18x = 958,592.07 × 212,619.06
  4. Step 4: Simplify right side
    639,045.18x = 203,814,944,846.85
  5. Step 5: Solve for x
    x = 203,814,944,846.85/639,045.18
  6. Step 6: Final answer
    x = 318,936.67

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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.