Home / 789,668.19-1,089,738.90-427,092.48

Finding the Fourth Proportional to 789,668.19, 1,089,738.90 and 427,092.48

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Solution

The fourth proportional to 789,668.19, 1,089,738.90 and 427,092.48 is: 589,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,668.19 : 1,089,738.90 = 427,092.48 : x
  2. Step 2: Convert to fraction form
    789,668.19/1,089,738.90 = 427,092.48/x
  3. Step 3: Cross multiply
    789,668.19x = 1,089,738.90 × 427,092.48
  4. Step 4: Simplify right side
    789,668.19x = 465,419,289,353.47
  5. Step 5: Solve for x
    x = 465,419,289,353.47/789,668.19
  6. Step 6: Final answer
    x = 589,385.89

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1.5x scale

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.