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Finding the Fourth Proportional to 396,063.72, 545,643.84 and 324,023.88

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Solution

The fourth proportional to 396,063.72, 545,643.84 and 324,023.88 is: 446,396.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,063.72 : 545,643.84 = 324,023.88 : x
  2. Step 2: Convert to fraction form
    396,063.72/545,643.84 = 324,023.88/x
  3. Step 3: Cross multiply
    396,063.72x = 545,643.84 × 324,023.88
  4. Step 4: Simplify right side
    396,063.72x = 176,801,634,134.90
  5. Step 5: Solve for x
    x = 176,801,634,134.90/396,063.72
  6. Step 6: Final answer
    x = 446,396.94

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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.