Home / 447,418.09-617,463.57-256,443.85

Finding the Fourth Proportional to 447,418.09, 617,463.57 and 256,443.85

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Solution

The fourth proportional to 447,418.09, 617,463.57 and 256,443.85 is: 353,907.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,418.09 : 617,463.57 = 256,443.85 : x
  2. Step 2: Convert to fraction form
    447,418.09/617,463.57 = 256,443.85/x
  3. Step 3: Cross multiply
    447,418.09x = 617,463.57 × 256,443.85
  4. Step 4: Simplify right side
    447,418.09x = 158,344,735,125.55
  5. Step 5: Solve for x
    x = 158,344,735,125.55/447,418.09
  6. Step 6: Final answer
    x = 353,907.76

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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.