Home / 2,120,717-2,926,566.78-1,261,258.40

Finding the Fourth Proportional to 2,120,717, 2,926,566.78 and 1,261,258.40

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Solution

The fourth proportional to 2,120,717, 2,926,566.78 and 1,261,258.40 is: 1,740,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,717 : 2,926,566.78 = 1,261,258.40 : x
  2. Step 2: Convert to fraction form
    2,120,717/2,926,566.78 = 1,261,258.40/x
  3. Step 3: Cross multiply
    2,120,717x = 2,926,566.78 × 1,261,258.40
  4. Step 4: Simplify right side
    2,120,717x = 3,691,156,934,435.95
  5. Step 5: Solve for x
    x = 3,691,156,934,435.95/2,120,717
  6. Step 6: Final answer
    x = 1,740,523.10

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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.