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Finding the Fourth Proportional to 505,712.60, 758,568.90 and 454,974.20

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Solution

The fourth proportional to 505,712.60, 758,568.90 and 454,974.20 is: 682,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,712.60 : 758,568.90 = 454,974.20 : x
  2. Step 2: Convert to fraction form
    505,712.60/758,568.90 = 454,974.20/x
  3. Step 3: Cross multiply
    505,712.60x = 758,568.90 × 454,974.20
  4. Step 4: Simplify right side
    505,712.60x = 345,129,278,422.38
  5. Step 5: Solve for x
    x = 345,129,278,422.38/505,712.60
  6. Step 6: Final answer
    x = 682,461.30

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Double scale
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Similar ratio
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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.