Home / 685,225.28-1,027,866.72-211,919.60

Finding the Fourth Proportional to 685,225.28, 1,027,866.72 and 211,919.60

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Solution

The fourth proportional to 685,225.28, 1,027,866.72 and 211,919.60 is: 317,888.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,225.28 : 1,027,866.72 = 211,919.60 : x
  2. Step 2: Convert to fraction form
    685,225.28/1,027,866.72 = 211,919.60/x
  3. Step 3: Cross multiply
    685,225.28x = 1,027,866.72 × 211,919.60
  4. Step 4: Simplify right side
    685,225.28x = 217,825,104,155.71
  5. Step 5: Solve for x
    x = 217,825,104,155.71/685,225.28
  6. Step 6: Final answer
    x = 317,888.31

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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.