Home / 789,210.78-1,183,827.11-256,734.60

Finding the Fourth Proportional to 789,210.78, 1,183,827.11 and 256,734.60

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Solution

The fourth proportional to 789,210.78, 1,183,827.11 and 256,734.60 is: 385,105.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,210.78 : 1,183,827.11 = 256,734.60 : x
  2. Step 2: Convert to fraction form
    789,210.78/1,183,827.11 = 256,734.60/x
  3. Step 3: Cross multiply
    789,210.78x = 1,183,827.11 × 256,734.60
  4. Step 4: Simplify right side
    789,210.78x = 303,929,378,271.33
  5. Step 5: Solve for x
    x = 303,929,378,271.33/789,210.78
  6. Step 6: Final answer
    x = 385,105.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.