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Finding the Fourth Proportional to 529,677.88, 730,960.10 and 287,960.62

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Solution

The fourth proportional to 529,677.88, 730,960.10 and 287,960.62 is: 397,388.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,677.88 : 730,960.10 = 287,960.62 : x
  2. Step 2: Convert to fraction form
    529,677.88/730,960.10 = 287,960.62/x
  3. Step 3: Cross multiply
    529,677.88x = 730,960.10 × 287,960.62
  4. Step 4: Simplify right side
    529,677.88x = 210,487,722,774.46
  5. Step 5: Solve for x
    x = 210,487,722,774.46/529,677.88
  6. Step 6: Final answer
    x = 397,388.17

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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.