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Finding the Fourth Proportional to 1,263,687, 1,895,530.76 and 422,238.84

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Solution

The fourth proportional to 1,263,687, 1,895,530.76 and 422,238.84 is: 633,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,687 : 1,895,530.76 = 422,238.84 : x
  2. Step 2: Convert to fraction form
    1,263,687/1,895,530.76 = 422,238.84/x
  3. Step 3: Cross multiply
    1,263,687x = 1,895,530.76 × 422,238.84
  4. Step 4: Simplify right side
    1,263,687x = 800,366,709,286.72
  5. Step 5: Solve for x
    x = 800,366,709,286.72/1,263,687
  6. Step 6: Final answer
    x = 633,358.35

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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.