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Finding the Fourth Proportional to 448,846.80, 672,286.05 and 389,797.80

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Solution

The fourth proportional to 448,846.80, 672,286.05 and 389,797.80 is: 583,842.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,846.80 : 672,286.05 = 389,797.80 : x
  2. Step 2: Convert to fraction form
    448,846.80/672,286.05 = 389,797.80/x
  3. Step 3: Cross multiply
    448,846.80x = 672,286.05 × 389,797.80
  4. Step 4: Simplify right side
    448,846.80x = 262,055,623,260.69
  5. Step 5: Solve for x
    x = 262,055,623,260.69/448,846.80
  6. Step 6: Final answer
    x = 583,842.02

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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.