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Finding the Fourth Proportional to 529,644.92, 730,901.31 and 287,933.49

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Solution

The fourth proportional to 529,644.92, 730,901.31 and 287,933.49 is: 397,343.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,644.92 : 730,901.31 = 287,933.49 : x
  2. Step 2: Convert to fraction form
    529,644.92/730,901.31 = 287,933.49/x
  3. Step 3: Cross multiply
    529,644.92x = 730,901.31 × 287,933.49
  4. Step 4: Simplify right side
    529,644.92x = 210,450,965,033.87
  5. Step 5: Solve for x
    x = 210,450,965,033.87/529,644.92
  6. Step 6: Final answer
    x = 397,343.50

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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.