Home / 2,166,143.07-2,989,387.67-1,199,379.72

Finding the Fourth Proportional to 2,166,143.07, 2,989,387.67 and 1,199,379.72

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Solution

The fourth proportional to 2,166,143.07, 2,989,387.67 and 1,199,379.72 is: 1,655,205.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166,143.07 : 2,989,387.67 = 1,199,379.72 : x
  2. Step 2: Convert to fraction form
    2,166,143.07/2,989,387.67 = 1,199,379.72/x
  3. Step 3: Cross multiply
    2,166,143.07x = 2,989,387.67 × 1,199,379.72
  4. Step 4: Simplify right side
    2,166,143.07x = 3,585,410,958,575.87
  5. Step 5: Solve for x
    x = 3,585,410,958,575.87/2,166,143.07
  6. Step 6: Final answer
    x = 1,655,205.05

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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.