Home / 483,986.59-667,629.14-290,342.78

Finding the Fourth Proportional to 483,986.59, 667,629.14 and 290,342.78

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Solution

The fourth proportional to 483,986.59, 667,629.14 and 290,342.78 is: 400,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,986.59 : 667,629.14 = 290,342.78 : x
  2. Step 2: Convert to fraction form
    483,986.59/667,629.14 = 290,342.78/x
  3. Step 3: Cross multiply
    483,986.59x = 667,629.14 × 290,342.78
  4. Step 4: Simplify right side
    483,986.59x = 193,841,298,230.36
  5. Step 5: Solve for x
    x = 193,841,298,230.36/483,986.59
  6. Step 6: Final answer
    x = 400,509.64

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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.