Home / 447,780.87-617,928.71-243,834.21

Finding the Fourth Proportional to 447,780.87, 617,928.71 and 243,834.21

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Solution

The fourth proportional to 447,780.87, 617,928.71 and 243,834.21 is: 336,486.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,780.87 : 617,928.71 = 243,834.21 : x
  2. Step 2: Convert to fraction form
    447,780.87/617,928.71 = 243,834.21/x
  3. Step 3: Cross multiply
    447,780.87x = 617,928.71 × 243,834.21
  4. Step 4: Simplify right side
    447,780.87x = 150,672,157,620.00
  5. Step 5: Solve for x
    x = 150,672,157,620.00/447,780.87
  6. Step 6: Final answer
    x = 336,486.37

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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.