Home / 1,422,101.78-1,962,519.07-777,522.71

Finding the Fourth Proportional to 1,422,101.78, 1,962,519.07 and 777,522.71

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Solution

The fourth proportional to 1,422,101.78, 1,962,519.07 and 777,522.71 is: 1,072,991.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,101.78 : 1,962,519.07 = 777,522.71 : x
  2. Step 2: Convert to fraction form
    1,422,101.78/1,962,519.07 = 777,522.71/x
  3. Step 3: Cross multiply
    1,422,101.78x = 1,962,519.07 × 777,522.71
  4. Step 4: Simplify right side
    1,422,101.78x = 1,525,903,150,153.43
  5. Step 5: Solve for x
    x = 1,525,903,150,153.43/1,422,101.78
  6. Step 6: Final answer
    x = 1,072,991.52

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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.