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Finding the Fourth Proportional to 451,247.40, 676,871.10 and 425,442.60

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Solution

The fourth proportional to 451,247.40, 676,871.10 and 425,442.60 is: 638,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,247.40 : 676,871.10 = 425,442.60 : x
  2. Step 2: Convert to fraction form
    451,247.40/676,871.10 = 425,442.60/x
  3. Step 3: Cross multiply
    451,247.40x = 676,871.10 × 425,442.60
  4. Step 4: Simplify right side
    451,247.40x = 287,969,800,648.86
  5. Step 5: Solve for x
    x = 287,969,800,648.86/451,247.40
  6. Step 6: Final answer
    x = 638,163.90

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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.