Home / 1,911,941.40-2,638,512.90-1,040,801.28

Finding the Fourth Proportional to 1,911,941.40, 2,638,512.90 and 1,040,801.28

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Solution

The fourth proportional to 1,911,941.40, 2,638,512.90 and 1,040,801.28 is: 1,436,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,941.40 : 2,638,512.90 = 1,040,801.28 : x
  2. Step 2: Convert to fraction form
    1,911,941.40/2,638,512.90 = 1,040,801.28/x
  3. Step 3: Cross multiply
    1,911,941.40x = 2,638,512.90 × 1,040,801.28
  4. Step 4: Simplify right side
    1,911,941.40x = 2,746,167,603,616.51
  5. Step 5: Solve for x
    x = 2,746,167,603,616.51/1,911,941.40
  6. Step 6: Final answer
    x = 1,436,324.15

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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.