Home / 1,321,131.66-1,823,165.22-777,287.94

Finding the Fourth Proportional to 1,321,131.66, 1,823,165.22 and 777,287.94

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Solution

The fourth proportional to 1,321,131.66, 1,823,165.22 and 777,287.94 is: 1,072,659.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,131.66 : 1,823,165.22 = 777,287.94 : x
  2. Step 2: Convert to fraction form
    1,321,131.66/1,823,165.22 = 777,287.94/x
  3. Step 3: Cross multiply
    1,321,131.66x = 1,823,165.22 × 777,287.94
  4. Step 4: Simplify right side
    1,321,131.66x = 1,417,124,338,133.45
  5. Step 5: Solve for x
    x = 1,417,124,338,133.45/1,321,131.66
  6. Step 6: Final answer
    x = 1,072,659.43

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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.