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Finding the Fourth Proportional to 574,310.40, 861,465.60 and 259,382.40

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Solution

The fourth proportional to 574,310.40, 861,465.60 and 259,382.40 is: 389,073.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,310.40 : 861,465.60 = 259,382.40 : x
  2. Step 2: Convert to fraction form
    574,310.40/861,465.60 = 259,382.40/x
  3. Step 3: Cross multiply
    574,310.40x = 861,465.60 × 259,382.40
  4. Step 4: Simplify right side
    574,310.40x = 223,449,014,845.44
  5. Step 5: Solve for x
    x = 223,449,014,845.44/574,310.40
  6. Step 6: Final answer
    x = 389,073.60

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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.