Home / 641,836.80-886,138.08-412,496.64

Finding the Fourth Proportional to 641,836.80, 886,138.08 and 412,496.64

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Solution

The fourth proportional to 641,836.80, 886,138.08 and 412,496.64 is: 569,504.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,836.80 : 886,138.08 = 412,496.64 : x
  2. Step 2: Convert to fraction form
    641,836.80/886,138.08 = 412,496.64/x
  3. Step 3: Cross multiply
    641,836.80x = 886,138.08 × 412,496.64
  4. Step 4: Simplify right side
    641,836.80x = 365,528,980,576.05
  5. Step 5: Solve for x
    x = 365,528,980,576.05/641,836.80
  6. Step 6: Final answer
    x = 569,504.55

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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.