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Finding the Fourth Proportional to 436,487.26, 654,758.56 and 136,979.64

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Solution

The fourth proportional to 436,487.26, 654,758.56 and 136,979.64 is: 205,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,487.26 : 654,758.56 = 136,979.64 : x
  2. Step 2: Convert to fraction form
    436,487.26/654,758.56 = 136,979.64/x
  3. Step 3: Cross multiply
    436,487.26x = 654,758.56 × 136,979.64
  4. Step 4: Simplify right side
    436,487.26x = 89,688,591,835.72
  5. Step 5: Solve for x
    x = 89,688,591,835.72/436,487.26
  6. Step 6: Final answer
    x = 205,478.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.