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Finding the Fourth Proportional to 447,774.80, 671,662.20 and 443,627.60

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Solution

The fourth proportional to 447,774.80, 671,662.20 and 443,627.60 is: 665,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,774.80 : 671,662.20 = 443,627.60 : x
  2. Step 2: Convert to fraction form
    447,774.80/671,662.20 = 443,627.60/x
  3. Step 3: Cross multiply
    447,774.80x = 671,662.20 × 443,627.60
  4. Step 4: Simplify right side
    447,774.80x = 297,967,889,796.72
  5. Step 5: Solve for x
    x = 297,967,889,796.72/447,774.80
  6. Step 6: Final answer
    x = 665,441.40

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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.