Home / 808,664.80-1,212,997.20-209,621.20

Finding the Fourth Proportional to 808,664.80, 1,212,997.20 and 209,621.20

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Solution

The fourth proportional to 808,664.80, 1,212,997.20 and 209,621.20 is: 314,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,664.80 : 1,212,997.20 = 209,621.20 : x
  2. Step 2: Convert to fraction form
    808,664.80/1,212,997.20 = 209,621.20/x
  3. Step 3: Cross multiply
    808,664.80x = 1,212,997.20 × 209,621.20
  4. Step 4: Simplify right side
    808,664.80x = 254,269,928,660.64
  5. Step 5: Solve for x
    x = 254,269,928,660.64/808,664.80
  6. Step 6: Final answer
    x = 314,431.80

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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.