Home / 809,136.75-1,213,763.46-310,500.75

Finding the Fourth Proportional to 809,136.75, 1,213,763.46 and 310,500.75

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Solution

The fourth proportional to 809,136.75, 1,213,763.46 and 310,500.75 is: 465,773.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,136.75 : 1,213,763.46 = 310,500.75 : x
  2. Step 2: Convert to fraction form
    809,136.75/1,213,763.46 = 310,500.75/x
  3. Step 3: Cross multiply
    809,136.75x = 1,213,763.46 × 310,500.75
  4. Step 4: Simplify right side
    809,136.75x = 376,874,464,652.60
  5. Step 5: Solve for x
    x = 376,874,464,652.60/809,136.75
  6. Step 6: Final answer
    x = 465,773.51

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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.