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Finding the Fourth Proportional to 851,806.10, 1,277,709.15 and 252,859.70

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Solution

The fourth proportional to 851,806.10, 1,277,709.15 and 252,859.70 is: 379,289.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,806.10 : 1,277,709.15 = 252,859.70 : x
  2. Step 2: Convert to fraction form
    851,806.10/1,277,709.15 = 252,859.70/x
  3. Step 3: Cross multiply
    851,806.10x = 1,277,709.15 × 252,859.70
  4. Step 4: Simplify right side
    851,806.10x = 323,081,152,356.26
  5. Step 5: Solve for x
    x = 323,081,152,356.26/851,806.10
  6. Step 6: Final answer
    x = 379,289.55

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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.