Home / 1,331,749.20-1,997,769.60-1,289,758.80

Finding the Fourth Proportional to 1,331,749.20, 1,997,769.60 and 1,289,758.80

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Solution

The fourth proportional to 1,331,749.20, 1,997,769.60 and 1,289,758.80 is: 1,934,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,749.20 : 1,997,769.60 = 1,289,758.80 : x
  2. Step 2: Convert to fraction form
    1,331,749.20/1,997,769.60 = 1,289,758.80/x
  3. Step 3: Cross multiply
    1,331,749.20x = 1,997,769.60 × 1,289,758.80
  4. Step 4: Simplify right side
    1,331,749.20x = 2,576,640,921,972.48
  5. Step 5: Solve for x
    x = 2,576,640,921,972.48/1,331,749.20
  6. Step 6: Final answer
    x = 1,934,779.40

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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.