Home / 419,929.39-629,764.89-120,329.65

Finding the Fourth Proportional to 419,929.39, 629,764.89 and 120,329.65

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Solution

The fourth proportional to 419,929.39, 629,764.89 and 120,329.65 is: 180,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,929.39 : 629,764.89 = 120,329.65 : x
  2. Step 2: Convert to fraction form
    419,929.39/629,764.89 = 120,329.65/x
  3. Step 3: Cross multiply
    419,929.39x = 629,764.89 × 120,329.65
  4. Step 4: Simplify right side
    419,929.39x = 75,779,388,795.99
  5. Step 5: Solve for x
    x = 75,779,388,795.99/419,929.39
  6. Step 6: Final answer
    x = 180,457.45

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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.