Home / 621,785.20-931,986.60-266,738.80

Finding the Fourth Proportional to 621,785.20, 931,986.60 and 266,738.80

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Solution

The fourth proportional to 621,785.20, 931,986.60 and 266,738.80 is: 399,811.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,785.20 : 931,986.60 = 266,738.80 : x
  2. Step 2: Convert to fraction form
    621,785.20/931,986.60 = 266,738.80/x
  3. Step 3: Cross multiply
    621,785.20x = 931,986.60 × 266,738.80
  4. Step 4: Simplify right side
    621,785.20x = 248,596,987,300.08
  5. Step 5: Solve for x
    x = 248,596,987,300.08/621,785.20
  6. Step 6: Final answer
    x = 399,811.68

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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.