Home / 989,918.20-1,366,584.78-828,177.40

Finding the Fourth Proportional to 989,918.20, 1,366,584.78 and 828,177.40

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Solution

The fourth proportional to 989,918.20, 1,366,584.78 and 828,177.40 is: 1,143,301.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,918.20 : 1,366,584.78 = 828,177.40 : x
  2. Step 2: Convert to fraction form
    989,918.20/1,366,584.78 = 828,177.40/x
  3. Step 3: Cross multiply
    989,918.20x = 1,366,584.78 × 828,177.40
  4. Step 4: Simplify right side
    989,918.20x = 1,131,774,629,979.97
  5. Step 5: Solve for x
    x = 1,131,774,629,979.97/989,918.20
  6. Step 6: Final answer
    x = 1,143,301.16

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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.