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Finding the Fourth Proportional to 882,674.70, 1,324,208.87 and 321,709.20

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Solution

The fourth proportional to 882,674.70, 1,324,208.87 and 321,709.20 is: 482,635.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,674.70 : 1,324,208.87 = 321,709.20 : x
  2. Step 2: Convert to fraction form
    882,674.70/1,324,208.87 = 321,709.20/x
  3. Step 3: Cross multiply
    882,674.70x = 1,324,208.87 × 321,709.20
  4. Step 4: Simplify right side
    882,674.70x = 426,010,176,200.60
  5. Step 5: Solve for x
    x = 426,010,176,200.60/882,674.70
  6. Step 6: Final answer
    x = 482,635.54

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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.