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Finding the Fourth Proportional to 1,221,892.28, 1,834,179.24 and 970,786.88

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Solution

The fourth proportional to 1,221,892.28, 1,834,179.24 and 970,786.88 is: 1,457,245.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,892.28 : 1,834,179.24 = 970,786.88 : x
  2. Step 2: Convert to fraction form
    1,221,892.28/1,834,179.24 = 970,786.88/x
  3. Step 3: Cross multiply
    1,221,892.28x = 1,834,179.24 × 970,786.88
  4. Step 4: Simplify right side
    1,221,892.28x = 1,780,597,141,760.37
  5. Step 5: Solve for x
    x = 1,780,597,141,760.37/1,221,892.28
  6. Step 6: Final answer
    x = 1,457,245.59

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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.