Home / 1,298,893.43-1,792,395.73-718,081.78

Finding the Fourth Proportional to 1,298,893.43, 1,792,395.73 and 718,081.78

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Solution

The fourth proportional to 1,298,893.43, 1,792,395.73 and 718,081.78 is: 990,910.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,893.43 : 1,792,395.73 = 718,081.78 : x
  2. Step 2: Convert to fraction form
    1,298,893.43/1,792,395.73 = 718,081.78/x
  3. Step 3: Cross multiply
    1,298,893.43x = 1,792,395.73 × 718,081.78
  4. Step 4: Simplify right side
    1,298,893.43x = 1,287,086,716,262.80
  5. Step 5: Solve for x
    x = 1,287,086,716,262.80/1,298,893.43
  6. Step 6: Final answer
    x = 990,910.18

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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.