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Finding the Fourth Proportional to 447,782.80, 671,674.20 and 443,635.60

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Solution

The fourth proportional to 447,782.80, 671,674.20 and 443,635.60 is: 665,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,782.80 : 671,674.20 = 443,635.60 : x
  2. Step 2: Convert to fraction form
    447,782.80/671,674.20 = 443,635.60/x
  3. Step 3: Cross multiply
    447,782.80x = 671,674.20 × 443,635.60
  4. Step 4: Simplify right side
    447,782.80x = 297,978,586,721.52
  5. Step 5: Solve for x
    x = 297,978,586,721.52/447,782.80
  6. Step 6: Final answer
    x = 665,453.40

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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.