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Finding the Fourth Proportional to 529,552.88, 730,787.92 and 287,836

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Solution

The fourth proportional to 529,552.88, 730,787.92 and 287,836 is: 397,216.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,552.88 : 730,787.92 = 287,836 : x
  2. Step 2: Convert to fraction form
    529,552.88/730,787.92 = 287,836/x
  3. Step 3: Cross multiply
    529,552.88x = 730,787.92 × 287,836
  4. Step 4: Simplify right side
    529,552.88x = 210,347,071,741.12
  5. Step 5: Solve for x
    x = 210,347,071,741.12/529,552.88
  6. Step 6: Final answer
    x = 397,216.37

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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.