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Finding the Fourth Proportional to 419,628.40, 629,446.95 and 335,920.67

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Solution

The fourth proportional to 419,628.40, 629,446.95 and 335,920.67 is: 503,884.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,628.40 : 629,446.95 = 335,920.67 : x
  2. Step 2: Convert to fraction form
    419,628.40/629,446.95 = 335,920.67/x
  3. Step 3: Cross multiply
    419,628.40x = 629,446.95 × 335,920.67
  4. Step 4: Simplify right side
    419,628.40x = 211,444,240,386.65
  5. Step 5: Solve for x
    x = 211,444,240,386.65/419,628.40
  6. Step 6: Final answer
    x = 503,884.49

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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.