Home / 427,435.20-641,152.80-409,233.60

Finding the Fourth Proportional to 427,435.20, 641,152.80 and 409,233.60

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Solution

The fourth proportional to 427,435.20, 641,152.80 and 409,233.60 is: 613,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,435.20 : 641,152.80 = 409,233.60 : x
  2. Step 2: Convert to fraction form
    427,435.20/641,152.80 = 409,233.60/x
  3. Step 3: Cross multiply
    427,435.20x = 641,152.80 × 409,233.60
  4. Step 4: Simplify right side
    427,435.20x = 262,381,268,494.08
  5. Step 5: Solve for x
    x = 262,381,268,494.08/427,435.20
  6. Step 6: Final answer
    x = 613,850.40

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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.