Home / 2,231,129.96-3,078,978.66-1,212,534.92

Finding the Fourth Proportional to 2,231,129.96, 3,078,978.66 and 1,212,534.92

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Solution

The fourth proportional to 2,231,129.96, 3,078,978.66 and 1,212,534.92 is: 1,673,308.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231,129.96 : 3,078,978.66 = 1,212,534.92 : x
  2. Step 2: Convert to fraction form
    2,231,129.96/3,078,978.66 = 1,212,534.92/x
  3. Step 3: Cross multiply
    2,231,129.96x = 3,078,978.66 × 1,212,534.92
  4. Step 4: Simplify right side
    2,231,129.96x = 3,733,369,143,184.81
  5. Step 5: Solve for x
    x = 3,733,369,143,184.81/2,231,129.96
  6. Step 6: Final answer
    x = 1,673,308.69

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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.