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Finding the Fourth Proportional to 529,520.59, 730,745.82 and 287,803.09

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Solution

The fourth proportional to 529,520.59, 730,745.82 and 287,803.09 is: 397,172.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,520.59 : 730,745.82 = 287,803.09 : x
  2. Step 2: Convert to fraction form
    529,520.59/730,745.82 = 287,803.09/x
  3. Step 3: Cross multiply
    529,520.59x = 730,745.82 × 287,803.09
  4. Step 4: Simplify right side
    529,520.59x = 210,310,903,173.72
  5. Step 5: Solve for x
    x = 210,310,903,173.72/529,520.59
  6. Step 6: Final answer
    x = 397,172.29

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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.