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Finding the Fourth Proportional to 414,234.80, 621,352.20 and 370,932.20

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Solution

The fourth proportional to 414,234.80, 621,352.20 and 370,932.20 is: 556,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,234.80 : 621,352.20 = 370,932.20 : x
  2. Step 2: Convert to fraction form
    414,234.80/621,352.20 = 370,932.20/x
  3. Step 3: Cross multiply
    414,234.80x = 621,352.20 × 370,932.20
  4. Step 4: Simplify right side
    414,234.80x = 230,479,538,520.84
  5. Step 5: Solve for x
    x = 230,479,538,520.84/414,234.80
  6. Step 6: Final answer
    x = 556,398.30

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Similar ratio
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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.