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Finding the Fourth Proportional to 436,633.92, 655,230.60 and 287,174.88

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Solution

The fourth proportional to 436,633.92, 655,230.60 and 287,174.88 is: 430,946.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,633.92 : 655,230.60 = 287,174.88 : x
  2. Step 2: Convert to fraction form
    436,633.92/655,230.60 = 287,174.88/x
  3. Step 3: Cross multiply
    436,633.92x = 655,230.60 × 287,174.88
  4. Step 4: Simplify right side
    436,633.92x = 188,165,768,927.33
  5. Step 5: Solve for x
    x = 188,165,768,927.33/436,633.92
  6. Step 6: Final answer
    x = 430,946.29

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1.5x scale

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.