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Finding the Fourth Proportional to 447,778.36, 617,460.56 and 345,820.42

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Solution

The fourth proportional to 447,778.36, 617,460.56 and 345,820.42 is: 476,866.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,778.36 : 617,460.56 = 345,820.42 : x
  2. Step 2: Convert to fraction form
    447,778.36/617,460.56 = 345,820.42/x
  3. Step 3: Cross multiply
    447,778.36x = 617,460.56 × 345,820.42
  4. Step 4: Simplify right side
    447,778.36x = 213,530,470,192.64
  5. Step 5: Solve for x
    x = 213,530,470,192.64/447,778.36
  6. Step 6: Final answer
    x = 476,866.43

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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.