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Finding the Fourth Proportional to 456,797.56, 629,964.12 and 392,246.50

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Solution

The fourth proportional to 456,797.56, 629,964.12 and 392,246.50 is: 540,942.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,797.56 : 629,964.12 = 392,246.50 : x
  2. Step 2: Convert to fraction form
    456,797.56/629,964.12 = 392,246.50/x
  3. Step 3: Cross multiply
    456,797.56x = 629,964.12 × 392,246.50
  4. Step 4: Simplify right side
    456,797.56x = 247,101,221,195.58
  5. Step 5: Solve for x
    x = 247,101,221,195.58/456,797.56
  6. Step 6: Final answer
    x = 540,942.52

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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.