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Finding the Fourth Proportional to 496,604.97, 685,267.38 and 278,763.75

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Solution

The fourth proportional to 496,604.97, 685,267.38 and 278,763.75 is: 384,667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,604.97 : 685,267.38 = 278,763.75 : x
  2. Step 2: Convert to fraction form
    496,604.97/685,267.38 = 278,763.75/x
  3. Step 3: Cross multiply
    496,604.97x = 685,267.38 × 278,763.75
  4. Step 4: Simplify right side
    496,604.97x = 191,027,704,601.48
  5. Step 5: Solve for x
    x = 191,027,704,601.48/496,604.97
  6. Step 6: Final answer
    x = 384,667.32

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1.5x scale

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.