Home / 685,235.40-1,027,998.90-211,968.60

Finding the Fourth Proportional to 685,235.40, 1,027,998.90 and 211,968.60

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Solution

The fourth proportional to 685,235.40, 1,027,998.90 and 211,968.60 is: 317,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,235.40 : 1,027,998.90 = 211,968.60 : x
  2. Step 2: Convert to fraction form
    685,235.40/1,027,998.90 = 211,968.60/x
  3. Step 3: Cross multiply
    685,235.40x = 1,027,998.90 × 211,968.60
  4. Step 4: Simplify right side
    685,235.40x = 217,903,487,634.54
  5. Step 5: Solve for x
    x = 217,903,487,634.54/685,235.40
  6. Step 6: Final answer
    x = 317,998.00

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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.