Home / 1,990,955.88-2,989,424.52-1,138,989.42

Finding the Fourth Proportional to 1,990,955.88, 2,989,424.52 and 1,138,989.42

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Solution

The fourth proportional to 1,990,955.88, 2,989,424.52 and 1,138,989.42 is: 1,710,195.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,955.88 : 2,989,424.52 = 1,138,989.42 : x
  2. Step 2: Convert to fraction form
    1,990,955.88/2,989,424.52 = 1,138,989.42/x
  3. Step 3: Cross multiply
    1,990,955.88x = 2,989,424.52 × 1,138,989.42
  4. Step 4: Simplify right side
    1,990,955.88x = 3,404,922,900,168.58
  5. Step 5: Solve for x
    x = 3,404,922,900,168.58/1,990,955.88
  6. Step 6: Final answer
    x = 1,710,195.05

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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.