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Finding the Fourth Proportional to 568,087.40, 852,131.10 and 287,568.20

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Solution

The fourth proportional to 568,087.40, 852,131.10 and 287,568.20 is: 431,352.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,087.40 : 852,131.10 = 287,568.20 : x
  2. Step 2: Convert to fraction form
    568,087.40/852,131.10 = 287,568.20/x
  3. Step 3: Cross multiply
    568,087.40x = 852,131.10 × 287,568.20
  4. Step 4: Simplify right side
    568,087.40x = 245,045,806,591.02
  5. Step 5: Solve for x
    x = 245,045,806,591.02/568,087.40
  6. Step 6: Final answer
    x = 431,352.30

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Half scale
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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.