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Finding the Fourth Proportional to 439,709.40, 659,564.10 and 262,416.60

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Solution

The fourth proportional to 439,709.40, 659,564.10 and 262,416.60 is: 393,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,709.40 : 659,564.10 = 262,416.60 : x
  2. Step 2: Convert to fraction form
    439,709.40/659,564.10 = 262,416.60/x
  3. Step 3: Cross multiply
    439,709.40x = 659,564.10 × 262,416.60
  4. Step 4: Simplify right side
    439,709.40x = 173,080,568,604.06
  5. Step 5: Solve for x
    x = 173,080,568,604.06/439,709.40
  6. Step 6: Final answer
    x = 393,624.90

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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.