Home / 789,819.28-1,089,947.44-427,242.72

Finding the Fourth Proportional to 789,819.28, 1,089,947.44 and 427,242.72

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Solution

The fourth proportional to 789,819.28, 1,089,947.44 and 427,242.72 is: 589,593.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,819.28 : 1,089,947.44 = 427,242.72 : x
  2. Step 2: Convert to fraction form
    789,819.28/1,089,947.44 = 427,242.72/x
  3. Step 3: Cross multiply
    789,819.28x = 1,089,947.44 × 427,242.72
  4. Step 4: Simplify right side
    789,819.28x = 465,672,108,922.64
  5. Step 5: Solve for x
    x = 465,672,108,922.64/789,819.28
  6. Step 6: Final answer
    x = 589,593.24

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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.