Home / 2,168,181.78-2,991,990.06-1,188,115

Finding the Fourth Proportional to 2,168,181.78, 2,991,990.06 and 1,188,115

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Solution

The fourth proportional to 2,168,181.78, 2,991,990.06 and 1,188,115 is: 1,639,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168,181.78 : 2,991,990.06 = 1,188,115 : x
  2. Step 2: Convert to fraction form
    2,168,181.78/2,991,990.06 = 1,188,115/x
  3. Step 3: Cross multiply
    2,168,181.78x = 2,991,990.06 × 1,188,115
  4. Step 4: Simplify right side
    2,168,181.78x = 3,554,828,270,136.90
  5. Step 5: Solve for x
    x = 3,554,828,270,136.90/2,168,181.78
  6. Step 6: Final answer
    x = 1,639,543.47

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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.