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Finding the Fourth Proportional to 439,810.80, 659,716.20 and 439,810.80

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Solution

The fourth proportional to 439,810.80, 659,716.20 and 439,810.80 is: 659,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,810.80 : 659,716.20 = 439,810.80 : x
  2. Step 2: Convert to fraction form
    439,810.80/659,716.20 = 439,810.80/x
  3. Step 3: Cross multiply
    439,810.80x = 659,716.20 × 439,810.80
  4. Step 4: Simplify right side
    439,810.80x = 290,150,309,694.96
  5. Step 5: Solve for x
    x = 290,150,309,694.96/439,810.80
  6. Step 6: Final answer
    x = 659,716.20

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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.