Home / 1,311,990.93-1,810,491.54-731,183.15

Finding the Fourth Proportional to 1,311,990.93, 1,810,491.54 and 731,183.15

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Solution

The fourth proportional to 1,311,990.93, 1,810,491.54 and 731,183.15 is: 1,009,001.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,990.93 : 1,810,491.54 = 731,183.15 : x
  2. Step 2: Convert to fraction form
    1,311,990.93/1,810,491.54 = 731,183.15/x
  3. Step 3: Cross multiply
    1,311,990.93x = 1,810,491.54 × 731,183.15
  4. Step 4: Simplify right side
    1,311,990.93x = 1,323,800,907,265.55
  5. Step 5: Solve for x
    x = 1,323,800,907,265.55/1,311,990.93
  6. Step 6: Final answer
    x = 1,009,001.57

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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.