Home / 685,282.69-1,028,157.55-205,522.12

Finding the Fourth Proportional to 685,282.69, 1,028,157.55 and 205,522.12

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Solution

The fourth proportional to 685,282.69, 1,028,157.55 and 205,522.12 is: 308,353.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,282.69 : 1,028,157.55 = 205,522.12 : x
  2. Step 2: Convert to fraction form
    685,282.69/1,028,157.55 = 205,522.12/x
  3. Step 3: Cross multiply
    685,282.69x = 1,028,157.55 × 205,522.12
  4. Step 4: Simplify right side
    685,282.69x = 211,309,119,370.01
  5. Step 5: Solve for x
    x = 211,309,119,370.01/685,282.69
  6. Step 6: Final answer
    x = 308,353.21

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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.