Home / 1,291,303.56-1,780,760.56-855,028.68

Finding the Fourth Proportional to 1,291,303.56, 1,780,760.56 and 855,028.68

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Solution

The fourth proportional to 1,291,303.56, 1,780,760.56 and 855,028.68 is: 1,179,119.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,303.56 : 1,780,760.56 = 855,028.68 : x
  2. Step 2: Convert to fraction form
    1,291,303.56/1,780,760.56 = 855,028.68/x
  3. Step 3: Cross multiply
    1,291,303.56x = 1,780,760.56 × 855,028.68
  4. Step 4: Simplify right side
    1,291,303.56x = 1,522,601,351,012.86
  5. Step 5: Solve for x
    x = 1,522,601,351,012.86/1,291,303.56
  6. Step 6: Final answer
    x = 1,179,119.61

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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.