Home / 1,391,469.93-2,087,238.92-788,120.37

Finding the Fourth Proportional to 1,391,469.93, 2,087,238.92 and 788,120.37

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Solution

The fourth proportional to 1,391,469.93, 2,087,238.92 and 788,120.37 is: 1,182,199.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,469.93 : 2,087,238.92 = 788,120.37 : x
  2. Step 2: Convert to fraction form
    1,391,469.93/2,087,238.92 = 788,120.37/x
  3. Step 3: Cross multiply
    1,391,469.93x = 2,087,238.92 × 788,120.37
  4. Step 4: Simplify right side
    1,391,469.93x = 1,644,995,505,968.20
  5. Step 5: Solve for x
    x = 1,644,995,505,968.20/1,391,469.93
  6. Step 6: Final answer
    x = 1,182,199.82

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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.