Home / 685,205.70-1,027,808.55-330,255.60

Finding the Fourth Proportional to 685,205.70, 1,027,808.55 and 330,255.60

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Solution

The fourth proportional to 685,205.70, 1,027,808.55 and 330,255.60 is: 495,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,205.70 : 1,027,808.55 = 330,255.60 : x
  2. Step 2: Convert to fraction form
    685,205.70/1,027,808.55 = 330,255.60/x
  3. Step 3: Cross multiply
    685,205.70x = 1,027,808.55 × 330,255.60
  4. Step 4: Simplify right side
    685,205.70x = 339,439,529,365.38
  5. Step 5: Solve for x
    x = 339,439,529,365.38/685,205.70
  6. Step 6: Final answer
    x = 495,383.40

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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.