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Finding the Fourth Proportional to 808,859.52, 1,213,289.69 and 276,385.77

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Solution

The fourth proportional to 808,859.52, 1,213,289.69 and 276,385.77 is: 414,578.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,859.52 : 1,213,289.69 = 276,385.77 : x
  2. Step 2: Convert to fraction form
    808,859.52/1,213,289.69 = 276,385.77/x
  3. Step 3: Cross multiply
    808,859.52x = 1,213,289.69 × 276,385.77
  4. Step 4: Simplify right side
    808,859.52x = 335,336,003,821.78
  5. Step 5: Solve for x
    x = 335,336,003,821.78/808,859.52
  6. Step 6: Final answer
    x = 414,578.79

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1.5x scale

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.