Home / 789,324.68-1,089,245.94-431,621

Finding the Fourth Proportional to 789,324.68, 1,089,245.94 and 431,621

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Solution

The fourth proportional to 789,324.68, 1,089,245.94 and 431,621 is: 595,624.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,324.68 : 1,089,245.94 = 431,621 : x
  2. Step 2: Convert to fraction form
    789,324.68/1,089,245.94 = 431,621/x
  3. Step 3: Cross multiply
    789,324.68x = 1,089,245.94 × 431,621
  4. Step 4: Simplify right side
    789,324.68x = 470,141,421,868.74
  5. Step 5: Solve for x
    x = 470,141,421,868.74/789,324.68
  6. Step 6: Final answer
    x = 595,624.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.