Home / 1,187,837.71-1,640,569.26-805,200.19

Finding the Fourth Proportional to 1,187,837.71, 1,640,569.26 and 805,200.19

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Solution

The fourth proportional to 1,187,837.71, 1,640,569.26 and 805,200.19 is: 1,112,093.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,837.71 : 1,640,569.26 = 805,200.19 : x
  2. Step 2: Convert to fraction form
    1,187,837.71/1,640,569.26 = 805,200.19/x
  3. Step 3: Cross multiply
    1,187,837.71x = 1,640,569.26 × 805,200.19
  4. Step 4: Simplify right side
    1,187,837.71x = 1,320,986,679,860.16
  5. Step 5: Solve for x
    x = 1,320,986,679,860.16/1,187,837.71
  6. Step 6: Final answer
    x = 1,112,093.57

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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.