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Finding the Fourth Proportional to 448,420.67, 672,062.21 and 443,674.79

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Solution

The fourth proportional to 448,420.67, 672,062.21 and 443,674.79 is: 664,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,420.67 : 672,062.21 = 443,674.79 : x
  2. Step 2: Convert to fraction form
    448,420.67/672,062.21 = 443,674.79/x
  3. Step 3: Cross multiply
    448,420.67x = 672,062.21 × 443,674.79
  4. Step 4: Simplify right side
    448,420.67x = 298,177,057,670.31
  5. Step 5: Solve for x
    x = 298,177,057,670.31/448,420.67
  6. Step 6: Final answer
    x = 664,949.40

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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.