Home / 679,647.78-1,019,516.63-199,918.50

Finding the Fourth Proportional to 679,647.78, 1,019,516.63 and 199,918.50

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Solution

The fourth proportional to 679,647.78, 1,019,516.63 and 199,918.50 is: 299,890.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,647.78 : 1,019,516.63 = 199,918.50 : x
  2. Step 2: Convert to fraction form
    679,647.78/1,019,516.63 = 199,918.50/x
  3. Step 3: Cross multiply
    679,647.78x = 1,019,516.63 × 199,918.50
  4. Step 4: Simplify right side
    679,647.78x = 203,820,230,571.88
  5. Step 5: Solve for x
    x = 203,820,230,571.88/679,647.78
  6. Step 6: Final answer
    x = 299,890.97

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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.