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Finding the Fourth Proportional to 460,832.69, 691,365.68 and 128,408.69

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Solution

The fourth proportional to 460,832.69, 691,365.68 and 128,408.69 is: 192,645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,832.69 : 691,365.68 = 128,408.69 : x
  2. Step 2: Convert to fraction form
    460,832.69/691,365.68 = 128,408.69/x
  3. Step 3: Cross multiply
    460,832.69x = 691,365.68 × 128,408.69
  4. Step 4: Simplify right side
    460,832.69x = 88,777,361,279.76
  5. Step 5: Solve for x
    x = 88,777,361,279.76/460,832.69
  6. Step 6: Final answer
    x = 192,645.54

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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.