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Finding the Fourth Proportional to 1,188,715, 1,640,455.50 and 652,171

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Solution

The fourth proportional to 1,188,715, 1,640,455.50 and 652,171 is: 900,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,715 : 1,640,455.50 = 652,171 : x
  2. Step 2: Convert to fraction form
    1,188,715/1,640,455.50 = 652,171/x
  3. Step 3: Cross multiply
    1,188,715x = 1,640,455.50 × 652,171
  4. Step 4: Simplify right side
    1,188,715x = 1,069,857,503,890.50
  5. Step 5: Solve for x
    x = 1,069,857,503,890.50/1,188,715
  6. Step 6: Final answer
    x = 900,011.78

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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.