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Finding the Fourth Proportional to 617,149.35, 851,730.24 and 355,513.68

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Solution

The fourth proportional to 617,149.35, 851,730.24 and 355,513.68 is: 490,645.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,149.35 : 851,730.24 = 355,513.68 : x
  2. Step 2: Convert to fraction form
    617,149.35/851,730.24 = 355,513.68/x
  3. Step 3: Cross multiply
    617,149.35x = 851,730.24 × 355,513.68
  4. Step 4: Simplify right side
    617,149.35x = 302,801,751,989.68
  5. Step 5: Solve for x
    x = 302,801,751,989.68/617,149.35
  6. Step 6: Final answer
    x = 490,645.83

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1.5x scale

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.