Home / 789,640.30-1,089,703.61-427,064.15

Finding the Fourth Proportional to 789,640.30, 1,089,703.61 and 427,064.15

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Solution

The fourth proportional to 789,640.30, 1,089,703.61 and 427,064.15 is: 589,348.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,640.30 : 1,089,703.61 = 427,064.15 : x
  2. Step 2: Convert to fraction form
    789,640.30/1,089,703.61 = 427,064.15/x
  3. Step 3: Cross multiply
    789,640.30x = 1,089,703.61 × 427,064.15
  4. Step 4: Simplify right side
    789,640.30x = 465,373,348,975.31
  5. Step 5: Solve for x
    x = 465,373,348,975.31/789,640.30
  6. Step 6: Final answer
    x = 589,348.53

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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.