Home / 1,269,633.36-1,749,912-1,209,840.72

Finding the Fourth Proportional to 1,269,633.36, 1,749,912 and 1,209,840.72

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Solution

The fourth proportional to 1,269,633.36, 1,749,912 and 1,209,840.72 is: 1,667,500.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,633.36 : 1,749,912 = 1,209,840.72 : x
  2. Step 2: Convert to fraction form
    1,269,633.36/1,749,912 = 1,209,840.72/x
  3. Step 3: Cross multiply
    1,269,633.36x = 1,749,912 × 1,209,840.72
  4. Step 4: Simplify right side
    1,269,633.36x = 2,117,114,794,016.64
  5. Step 5: Solve for x
    x = 2,117,114,794,016.64/1,269,633.36
  6. Step 6: Final answer
    x = 1,667,500.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.