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Finding the Fourth Proportional to 538,679.63, 743,380.11 and 296,956.86

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Solution

The fourth proportional to 538,679.63, 743,380.11 and 296,956.86 is: 409,801.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,679.63 : 743,380.11 = 296,956.86 : x
  2. Step 2: Convert to fraction form
    538,679.63/743,380.11 = 296,956.86/x
  3. Step 3: Cross multiply
    538,679.63x = 743,380.11 × 296,956.86
  4. Step 4: Simplify right side
    538,679.63x = 220,751,823,252.06
  5. Step 5: Solve for x
    x = 220,751,823,252.06/538,679.63
  6. Step 6: Final answer
    x = 409,801.69

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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.