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Finding the Fourth Proportional to 617,134.68, 851,709.96 and 355,499.04

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Solution

The fourth proportional to 617,134.68, 851,709.96 and 355,499.04 is: 490,625.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,134.68 : 851,709.96 = 355,499.04 : x
  2. Step 2: Convert to fraction form
    617,134.68/851,709.96 = 355,499.04/x
  3. Step 3: Cross multiply
    617,134.68x = 851,709.96 × 355,499.04
  4. Step 4: Simplify right side
    617,134.68x = 302,782,073,138.44
  5. Step 5: Solve for x
    x = 302,782,073,138.44/617,134.68
  6. Step 6: Final answer
    x = 490,625.60

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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.