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Finding the Fourth Proportional to 701,921.40, 968,648.46 and 379,631.88

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Solution

The fourth proportional to 701,921.40, 968,648.46 and 379,631.88 is: 523,890.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,921.40 : 968,648.46 = 379,631.88 : x
  2. Step 2: Convert to fraction form
    701,921.40/968,648.46 = 379,631.88/x
  3. Step 3: Cross multiply
    701,921.40x = 968,648.46 × 379,631.88
  4. Step 4: Simplify right side
    701,921.40x = 367,729,835,928.91
  5. Step 5: Solve for x
    x = 367,729,835,928.91/701,921.40
  6. Step 6: Final answer
    x = 523,890.33

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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.