Home / 789,487.26-1,089,491.61-426,910.20

Finding the Fourth Proportional to 789,487.26, 1,089,491.61 and 426,910.20

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Solution

The fourth proportional to 789,487.26, 1,089,491.61 and 426,910.20 is: 589,135.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,487.26 : 1,089,491.61 = 426,910.20 : x
  2. Step 2: Convert to fraction form
    789,487.26/1,089,491.61 = 426,910.20/x
  3. Step 3: Cross multiply
    789,487.26x = 1,089,491.61 × 426,910.20
  4. Step 4: Simplify right side
    789,487.26x = 465,115,078,638.74
  5. Step 5: Solve for x
    x = 465,115,078,638.74/789,487.26
  6. Step 6: Final answer
    x = 589,135.64

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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.