Home / 1,321,004.20-1,981,506.30-1,096,812.40

Finding the Fourth Proportional to 1,321,004.20, 1,981,506.30 and 1,096,812.40

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Solution

The fourth proportional to 1,321,004.20, 1,981,506.30 and 1,096,812.40 is: 1,645,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,004.20 : 1,981,506.30 = 1,096,812.40 : x
  2. Step 2: Convert to fraction form
    1,321,004.20/1,981,506.30 = 1,096,812.40/x
  3. Step 3: Cross multiply
    1,321,004.20x = 1,981,506.30 × 1,096,812.40
  4. Step 4: Simplify right side
    1,321,004.20x = 2,173,340,680,518.12
  5. Step 5: Solve for x
    x = 2,173,340,680,518.12/1,321,004.20
  6. Step 6: Final answer
    x = 1,645,218.60

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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.