Home / 685,057.30-1,027,684.36-211,779.56

Finding the Fourth Proportional to 685,057.30, 1,027,684.36 and 211,779.56

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Solution

The fourth proportional to 685,057.30, 1,027,684.36 and 211,779.56 is: 317,699.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,057.30 : 1,027,684.36 = 211,779.56 : x
  2. Step 2: Convert to fraction form
    685,057.30/1,027,684.36 = 211,779.56/x
  3. Step 3: Cross multiply
    685,057.30x = 1,027,684.36 × 211,779.56
  4. Step 4: Simplify right side
    685,057.30x = 217,642,544,413.62
  5. Step 5: Solve for x
    x = 217,642,544,413.62/685,057.30
  6. Step 6: Final answer
    x = 317,699.77

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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.