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Finding the Fourth Proportional to 554,964.75, 765,856.85 and 300,321.41

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Solution

The fourth proportional to 554,964.75, 765,856.85 and 300,321.41 is: 414,446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,964.75 : 765,856.85 = 300,321.41 : x
  2. Step 2: Convert to fraction form
    554,964.75/765,856.85 = 300,321.41/x
  3. Step 3: Cross multiply
    554,964.75x = 765,856.85 × 300,321.41
  4. Step 4: Simplify right side
    554,964.75x = 230,003,203,719.27
  5. Step 5: Solve for x
    x = 230,003,203,719.27/554,964.75
  6. Step 6: Final answer
    x = 414,446.51

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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.