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Finding the Fourth Proportional to 529,633.44, 730,898.90 and 287,916.48

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Solution

The fourth proportional to 529,633.44, 730,898.90 and 287,916.48 is: 397,327.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,633.44 : 730,898.90 = 287,916.48 : x
  2. Step 2: Convert to fraction form
    529,633.44/730,898.90 = 287,916.48/x
  3. Step 3: Cross multiply
    529,633.44x = 730,898.90 × 287,916.48
  4. Step 4: Simplify right side
    529,633.44x = 210,437,839,243.66
  5. Step 5: Solve for x
    x = 210,437,839,243.66/529,633.44
  6. Step 6: Final answer
    x = 397,327.33

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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.