Home / 789,715.40-1,089,803.67-427,138.39

Finding the Fourth Proportional to 789,715.40, 1,089,803.67 and 427,138.39

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Solution

The fourth proportional to 789,715.40, 1,089,803.67 and 427,138.39 is: 589,449.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,715.40 : 1,089,803.67 = 427,138.39 : x
  2. Step 2: Convert to fraction form
    789,715.40/1,089,803.67 = 427,138.39/x
  3. Step 3: Cross multiply
    789,715.40x = 1,089,803.67 × 427,138.39
  4. Step 4: Simplify right side
    789,715.40x = 465,496,981,715.30
  5. Step 5: Solve for x
    x = 465,496,981,715.30/789,715.40
  6. Step 6: Final answer
    x = 589,449.04

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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.