Home / 485,850.07-670,292.34-281,786.56

Finding the Fourth Proportional to 485,850.07, 670,292.34 and 281,786.56

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Solution

The fourth proportional to 485,850.07, 670,292.34 and 281,786.56 is: 388,760.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,850.07 : 670,292.34 = 281,786.56 : x
  2. Step 2: Convert to fraction form
    485,850.07/670,292.34 = 281,786.56/x
  3. Step 3: Cross multiply
    485,850.07x = 670,292.34 × 281,786.56
  4. Step 4: Simplify right side
    485,850.07x = 188,879,372,682.95
  5. Step 5: Solve for x
    x = 188,879,372,682.95/485,850.07
  6. Step 6: Final answer
    x = 388,760.62

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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.