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Finding the Fourth Proportional to 436,080.70, 654,121.05 and 317,107.90

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Solution

The fourth proportional to 436,080.70, 654,121.05 and 317,107.90 is: 475,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,080.70 : 654,121.05 = 317,107.90 : x
  2. Step 2: Convert to fraction form
    436,080.70/654,121.05 = 317,107.90/x
  3. Step 3: Cross multiply
    436,080.70x = 654,121.05 × 317,107.90
  4. Step 4: Simplify right side
    436,080.70x = 207,426,952,511.30
  5. Step 5: Solve for x
    x = 207,426,952,511.30/436,080.70
  6. Step 6: Final answer
    x = 475,661.85

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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.