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Finding the Fourth Proportional to 667,245.72, 920,800.92 and 361,325.68

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Solution

The fourth proportional to 667,245.72, 920,800.92 and 361,325.68 is: 498,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,245.72 : 920,800.92 = 361,325.68 : x
  2. Step 2: Convert to fraction form
    667,245.72/920,800.92 = 361,325.68/x
  3. Step 3: Cross multiply
    667,245.72x = 920,800.92 × 361,325.68
  4. Step 4: Simplify right side
    667,245.72x = 332,709,018,563.63
  5. Step 5: Solve for x
    x = 332,709,018,563.63/667,245.72
  6. Step 6: Final answer
    x = 498,630.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.