Home / 989,917.20-1,366,583.40-828,176.40

Finding the Fourth Proportional to 989,917.20, 1,366,583.40 and 828,176.40

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Solution

The fourth proportional to 989,917.20, 1,366,583.40 and 828,176.40 is: 1,143,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,917.20 : 1,366,583.40 = 828,176.40 : x
  2. Step 2: Convert to fraction form
    989,917.20/1,366,583.40 = 828,176.40/x
  3. Step 3: Cross multiply
    989,917.20x = 1,366,583.40 × 828,176.40
  4. Step 4: Simplify right side
    989,917.20x = 1,131,772,120,511.76
  5. Step 5: Solve for x
    x = 1,131,772,120,511.76/989,917.20
  6. Step 6: Final answer
    x = 1,143,299.78

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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.