Home / 621,268.25-856,928.70-403,087.12

Finding the Fourth Proportional to 621,268.25, 856,928.70 and 403,087.12

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Solution

The fourth proportional to 621,268.25, 856,928.70 and 403,087.12 is: 555,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,268.25 : 856,928.70 = 403,087.12 : x
  2. Step 2: Convert to fraction form
    621,268.25/856,928.70 = 403,087.12/x
  3. Step 3: Cross multiply
    621,268.25x = 856,928.70 × 403,087.12
  4. Step 4: Simplify right side
    621,268.25x = 345,416,919,586.02
  5. Step 5: Solve for x
    x = 345,416,919,586.02/621,268.25
  6. Step 6: Final answer
    x = 555,986.76

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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.