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Finding the Fourth Proportional to 1,664,986.92, 2,297,689.19 and 901,040.55

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Solution

The fourth proportional to 1,664,986.92, 2,297,689.19 and 901,040.55 is: 1,243,439.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,986.92 : 2,297,689.19 = 901,040.55 : x
  2. Step 2: Convert to fraction form
    1,664,986.92/2,297,689.19 = 901,040.55/x
  3. Step 3: Cross multiply
    1,664,986.92x = 2,297,689.19 × 901,040.55
  4. Step 4: Simplify right side
    1,664,986.92x = 2,070,311,131,486.65
  5. Step 5: Solve for x
    x = 2,070,311,131,486.65/1,664,986.92
  6. Step 6: Final answer
    x = 1,243,439.88

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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.