Home / 490,968.54-677,629.74-307,292.40

Finding the Fourth Proportional to 490,968.54, 677,629.74 and 307,292.40

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Solution

The fourth proportional to 490,968.54, 677,629.74 and 307,292.40 is: 424,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,968.54 : 677,629.74 = 307,292.40 : x
  2. Step 2: Convert to fraction form
    490,968.54/677,629.74 = 307,292.40/x
  3. Step 3: Cross multiply
    490,968.54x = 677,629.74 × 307,292.40
  4. Step 4: Simplify right side
    490,968.54x = 208,230,469,115.98
  5. Step 5: Solve for x
    x = 208,230,469,115.98/490,968.54
  6. Step 6: Final answer
    x = 424,121.82

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1.5x scale

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.