Home / 679,383.55-1,019,533.68-280,015.48

Finding the Fourth Proportional to 679,383.55, 1,019,533.68 and 280,015.48

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Solution

The fourth proportional to 679,383.55, 1,019,533.68 and 280,015.48 is: 420,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,383.55 : 1,019,533.68 = 280,015.48 : x
  2. Step 2: Convert to fraction form
    679,383.55/1,019,533.68 = 280,015.48/x
  3. Step 3: Cross multiply
    679,383.55x = 1,019,533.68 × 280,015.48
  4. Step 4: Simplify right side
    679,383.55x = 285,485,214,055.78
  5. Step 5: Solve for x
    x = 285,485,214,055.78/679,383.55
  6. Step 6: Final answer
    x = 420,212.14

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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.