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Finding the Fourth Proportional to 529,489.98, 730,700.96 and 287,773.11

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Solution

The fourth proportional to 529,489.98, 730,700.96 and 287,773.11 is: 397,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,489.98 : 730,700.96 = 287,773.11 : x
  2. Step 2: Convert to fraction form
    529,489.98/730,700.96 = 287,773.11/x
  3. Step 3: Cross multiply
    529,489.98x = 730,700.96 × 287,773.11
  4. Step 4: Simplify right side
    529,489.98x = 210,276,086,300.32
  5. Step 5: Solve for x
    x = 210,276,086,300.32/529,489.98
  6. Step 6: Final answer
    x = 397,129.49

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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.