Home / 638,914.39-958,269.99-212,414.77

Finding the Fourth Proportional to 638,914.39, 958,269.99 and 212,414.77

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Solution

The fourth proportional to 638,914.39, 958,269.99 and 212,414.77 is: 318,588.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,914.39 : 958,269.99 = 212,414.77 : x
  2. Step 2: Convert to fraction form
    638,914.39/958,269.99 = 212,414.77/x
  3. Step 3: Cross multiply
    638,914.39x = 958,269.99 × 212,414.77
  4. Step 4: Simplify right side
    638,914.39x = 203,550,699,523.75
  5. Step 5: Solve for x
    x = 203,550,699,523.75/638,914.39
  6. Step 6: Final answer
    x = 318,588.38

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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.