Home / 789,774.78-1,089,889.34-427,198.53

Finding the Fourth Proportional to 789,774.78, 1,089,889.34 and 427,198.53

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Solution

The fourth proportional to 789,774.78, 1,089,889.34 and 427,198.53 is: 589,534.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,774.78 : 1,089,889.34 = 427,198.53 : x
  2. Step 2: Convert to fraction form
    789,774.78/1,089,889.34 = 427,198.53/x
  3. Step 3: Cross multiply
    789,774.78x = 1,089,889.34 × 427,198.53
  4. Step 4: Simplify right side
    789,774.78x = 465,599,123,910.67
  5. Step 5: Solve for x
    x = 465,599,123,910.67/789,774.78
  6. Step 6: Final answer
    x = 589,534.05

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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.