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Finding the Fourth Proportional to 529,660.10, 730,945.26 and 287,958.93

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Solution

The fourth proportional to 529,660.10, 730,945.26 and 287,958.93 is: 397,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,660.10 : 730,945.26 = 287,958.93 : x
  2. Step 2: Convert to fraction form
    529,660.10/730,945.26 = 287,958.93/x
  3. Step 3: Cross multiply
    529,660.10x = 730,945.26 × 287,958.93
  4. Step 4: Simplify right side
    529,660.10x = 210,482,214,958.17
  5. Step 5: Solve for x
    x = 210,482,214,958.17/529,660.10
  6. Step 6: Final answer
    x = 397,391.11

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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.