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Finding the Fourth Proportional to 529,105.44, 730,170.87 and 287,392.74

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Solution

The fourth proportional to 529,105.44, 730,170.87 and 287,392.74 is: 396,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,105.44 : 730,170.87 = 287,392.74 : x
  2. Step 2: Convert to fraction form
    529,105.44/730,170.87 = 287,392.74/x
  3. Step 3: Cross multiply
    529,105.44x = 730,170.87 × 287,392.74
  4. Step 4: Simplify right side
    529,105.44x = 209,845,806,997.48
  5. Step 5: Solve for x
    x = 209,845,806,997.48/529,105.44
  6. Step 6: Final answer
    x = 396,604.89

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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.