Home / 1,289,231.28-1,931,189.70-755,133.09

Finding the Fourth Proportional to 1,289,231.28, 1,931,189.70 and 755,133.09

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Solution

The fourth proportional to 1,289,231.28, 1,931,189.70 and 755,133.09 is: 1,131,143.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,231.28 : 1,931,189.70 = 755,133.09 : x
  2. Step 2: Convert to fraction form
    1,289,231.28/1,931,189.70 = 755,133.09/x
  3. Step 3: Cross multiply
    1,289,231.28x = 1,931,189.70 × 755,133.09
  4. Step 4: Simplify right side
    1,289,231.28x = 1,458,305,245,537.17
  5. Step 5: Solve for x
    x = 1,458,305,245,537.17/1,289,231.28
  6. Step 6: Final answer
    x = 1,131,143.24

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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.