Home / 1,640,738.70-2,264,219.85-905,693.42

Finding the Fourth Proportional to 1,640,738.70, 2,264,219.85 and 905,693.42

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Solution

The fourth proportional to 1,640,738.70, 2,264,219.85 and 905,693.42 is: 1,249,857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,738.70 : 2,264,219.85 = 905,693.42 : x
  2. Step 2: Convert to fraction form
    1,640,738.70/2,264,219.85 = 905,693.42/x
  3. Step 3: Cross multiply
    1,640,738.70x = 2,264,219.85 × 905,693.42
  4. Step 4: Simplify right side
    1,640,738.70x = 2,050,689,019,578.39
  5. Step 5: Solve for x
    x = 2,050,689,019,578.39/1,640,738.70
  6. Step 6: Final answer
    x = 1,249,857.16

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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.