Home / 672,086.40-1,008,421.20-339,662.40

Finding the Fourth Proportional to 672,086.40, 1,008,421.20 and 339,662.40

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Solution

The fourth proportional to 672,086.40, 1,008,421.20 and 339,662.40 is: 509,640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,086.40 : 1,008,421.20 = 339,662.40 : x
  2. Step 2: Convert to fraction form
    672,086.40/1,008,421.20 = 339,662.40/x
  3. Step 3: Cross multiply
    672,086.40x = 1,008,421.20 × 339,662.40
  4. Step 4: Simplify right side
    672,086.40x = 342,522,765,002.88
  5. Step 5: Solve for x
    x = 342,522,765,002.88/672,086.40
  6. Step 6: Final answer
    x = 509,640.97

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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.