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Finding the Fourth Proportional to 526,163.40, 789,245.10 and 487,672.20

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Solution

The fourth proportional to 526,163.40, 789,245.10 and 487,672.20 is: 731,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,163.40 : 789,245.10 = 487,672.20 : x
  2. Step 2: Convert to fraction form
    526,163.40/789,245.10 = 487,672.20/x
  3. Step 3: Cross multiply
    526,163.40x = 789,245.10 × 487,672.20
  4. Step 4: Simplify right side
    526,163.40x = 384,892,894,256.22
  5. Step 5: Solve for x
    x = 384,892,894,256.22/526,163.40
  6. Step 6: Final answer
    x = 731,508.30

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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.