Home / 685,938.94-1,028,961.65-206,129.29

Finding the Fourth Proportional to 685,938.94, 1,028,961.65 and 206,129.29

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Solution

The fourth proportional to 685,938.94, 1,028,961.65 and 206,129.29 is: 309,209.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,938.94 : 1,028,961.65 = 206,129.29 : x
  2. Step 2: Convert to fraction form
    685,938.94/1,028,961.65 = 206,129.29/x
  3. Step 3: Cross multiply
    685,938.94x = 1,028,961.65 × 206,129.29
  4. Step 4: Simplify right side
    685,938.94x = 212,099,133,321.08
  5. Step 5: Solve for x
    x = 212,099,133,321.08/685,938.94
  6. Step 6: Final answer
    x = 309,209.93

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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.