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Finding the Fourth Proportional to 474,364.20, 654,817.37 and 321,611.61

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Solution

The fourth proportional to 474,364.20, 654,817.37 and 321,611.61 is: 443,956.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,364.20 : 654,817.37 = 321,611.61 : x
  2. Step 2: Convert to fraction form
    474,364.20/654,817.37 = 321,611.61/x
  3. Step 3: Cross multiply
    474,364.20x = 654,817.37 × 321,611.61
  4. Step 4: Simplify right side
    474,364.20x = 210,596,867,013.61
  5. Step 5: Solve for x
    x = 210,596,867,013.61/474,364.20
  6. Step 6: Final answer
    x = 443,956.07

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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.