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Finding the Fourth Proportional to 439,716.20, 659,574.30 and 297,998.60

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Solution

The fourth proportional to 439,716.20, 659,574.30 and 297,998.60 is: 446,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,716.20 : 659,574.30 = 297,998.60 : x
  2. Step 2: Convert to fraction form
    439,716.20/659,574.30 = 297,998.60/x
  3. Step 3: Cross multiply
    439,716.20x = 659,574.30 × 297,998.60
  4. Step 4: Simplify right side
    439,716.20x = 196,552,217,995.98
  5. Step 5: Solve for x
    x = 196,552,217,995.98/439,716.20
  6. Step 6: Final answer
    x = 446,997.90

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1.5x scale

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.