Home / 1,263,107.20-1,743,100.18-690,147.32

Finding the Fourth Proportional to 1,263,107.20, 1,743,100.18 and 690,147.32

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Solution

The fourth proportional to 1,263,107.20, 1,743,100.18 and 690,147.32 is: 952,409.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,107.20 : 1,743,100.18 = 690,147.32 : x
  2. Step 2: Convert to fraction form
    1,263,107.20/1,743,100.18 = 690,147.32/x
  3. Step 3: Cross multiply
    1,263,107.20x = 1,743,100.18 × 690,147.32
  4. Step 4: Simplify right side
    1,263,107.20x = 1,202,995,917,718.52
  5. Step 5: Solve for x
    x = 1,202,995,917,718.52/1,263,107.20
  6. Step 6: Final answer
    x = 952,409.99

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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.