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Finding the Fourth Proportional to 617,151.35, 851,733 and 355,515.68

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Solution

The fourth proportional to 617,151.35, 851,733 and 355,515.68 is: 490,648.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,151.35 : 851,733 = 355,515.68 : x
  2. Step 2: Convert to fraction form
    617,151.35/851,733 = 355,515.68/x
  3. Step 3: Cross multiply
    617,151.35x = 851,733 × 355,515.68
  4. Step 4: Simplify right side
    617,151.35x = 302,804,436,673.44
  5. Step 5: Solve for x
    x = 302,804,436,673.44/617,151.35
  6. Step 6: Final answer
    x = 490,648.59

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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.