Home / 685,973.30-1,028,998.83-212,725.94

Finding the Fourth Proportional to 685,973.30, 1,028,998.83 and 212,725.94

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Solution

The fourth proportional to 685,973.30, 1,028,998.83 and 212,725.94 is: 319,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,973.30 : 1,028,998.83 = 212,725.94 : x
  2. Step 2: Convert to fraction form
    685,973.30/1,028,998.83 = 212,725.94/x
  3. Step 3: Cross multiply
    685,973.30x = 1,028,998.83 × 212,725.94
  4. Step 4: Simplify right side
    685,973.30x = 218,894,743,370.65
  5. Step 5: Solve for x
    x = 218,894,743,370.65/685,973.30
  6. Step 6: Final answer
    x = 319,100.97

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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.