Home / 1,638,163.69-2,260,825.83-1,223,981.77

Finding the Fourth Proportional to 1,638,163.69, 2,260,825.83 and 1,223,981.77

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Solution

The fourth proportional to 1,638,163.69, 2,260,825.83 and 1,223,981.77 is: 1,689,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,163.69 : 2,260,825.83 = 1,223,981.77 : x
  2. Step 2: Convert to fraction form
    1,638,163.69/2,260,825.83 = 1,223,981.77/x
  3. Step 3: Cross multiply
    1,638,163.69x = 2,260,825.83 × 1,223,981.77
  4. Step 4: Simplify right side
    1,638,163.69x = 2,767,209,609,190.07
  5. Step 5: Solve for x
    x = 2,767,209,609,190.07/1,638,163.69
  6. Step 6: Final answer
    x = 1,689,214.34

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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.