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Finding the Fourth Proportional to 454,085, 680,077.74 and 438,338.60

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Solution

The fourth proportional to 454,085, 680,077.74 and 438,338.60 is: 656,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,085 : 680,077.74 = 438,338.60 : x
  2. Step 2: Convert to fraction form
    454,085/680,077.74 = 438,338.60/x
  3. Step 3: Cross multiply
    454,085x = 680,077.74 × 438,338.60
  4. Step 4: Simplify right side
    454,085x = 298,104,324,442.76
  5. Step 5: Solve for x
    x = 298,104,324,442.76/454,085
  6. Step 6: Final answer
    x = 656,494.54

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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.