Home / 789,578.28-1,089,626.99-427,009.32

Finding the Fourth Proportional to 789,578.28, 1,089,626.99 and 427,009.32

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Solution

The fourth proportional to 789,578.28, 1,089,626.99 and 427,009.32 is: 589,277.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,578.28 : 1,089,626.99 = 427,009.32 : x
  2. Step 2: Convert to fraction form
    789,578.28/1,089,626.99 = 427,009.32/x
  3. Step 3: Cross multiply
    789,578.28x = 1,089,626.99 × 427,009.32
  4. Step 4: Simplify right side
    789,578.28x = 465,280,877,918.50
  5. Step 5: Solve for x
    x = 465,280,877,918.50/789,578.28
  6. Step 6: Final answer
    x = 589,277.71

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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.