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Finding the Fourth Proportional to 438,628.87, 656,446.33 and 367,631.66

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Solution

The fourth proportional to 438,628.87, 656,446.33 and 367,631.66 is: 550,192.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,628.87 : 656,446.33 = 367,631.66 : x
  2. Step 2: Convert to fraction form
    438,628.87/656,446.33 = 367,631.66/x
  3. Step 3: Cross multiply
    438,628.87x = 656,446.33 × 367,631.66
  4. Step 4: Simplify right side
    438,628.87x = 241,330,454,031.54
  5. Step 5: Solve for x
    x = 241,330,454,031.54/438,628.87
  6. Step 6: Final answer
    x = 550,192.82

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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.