Home / 547,180.48-821,059.64-388,283.20

Finding the Fourth Proportional to 547,180.48, 821,059.64 and 388,283.20

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Solution

The fourth proportional to 547,180.48, 821,059.64 and 388,283.20 is: 582,629.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,180.48 : 821,059.64 = 388,283.20 : x
  2. Step 2: Convert to fraction form
    547,180.48/821,059.64 = 388,283.20/x
  3. Step 3: Cross multiply
    547,180.48x = 821,059.64 × 388,283.20
  4. Step 4: Simplify right side
    547,180.48x = 318,803,664,410.05
  5. Step 5: Solve for x
    x = 318,803,664,410.05/547,180.48
  6. Step 6: Final answer
    x = 582,629.82

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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.