Home / 685,205.20-1,027,807.80-330,255.10

Finding the Fourth Proportional to 685,205.20, 1,027,807.80 and 330,255.10

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Solution

The fourth proportional to 685,205.20, 1,027,807.80 and 330,255.10 is: 495,382.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,205.20 : 1,027,807.80 = 330,255.10 : x
  2. Step 2: Convert to fraction form
    685,205.20/1,027,807.80 = 330,255.10/x
  3. Step 3: Cross multiply
    685,205.20x = 1,027,807.80 × 330,255.10
  4. Step 4: Simplify right side
    685,205.20x = 339,438,767,769.78
  5. Step 5: Solve for x
    x = 339,438,767,769.78/685,205.20
  6. Step 6: Final answer
    x = 495,382.65

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Similar ratio
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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.