Home / 1,428,493.10-1,971,377.24-783,936.51

Finding the Fourth Proportional to 1,428,493.10, 1,971,377.24 and 783,936.51

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Solution

The fourth proportional to 1,428,493.10, 1,971,377.24 and 783,936.51 is: 1,081,863.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,493.10 : 1,971,377.24 = 783,936.51 : x
  2. Step 2: Convert to fraction form
    1,428,493.10/1,971,377.24 = 783,936.51/x
  3. Step 3: Cross multiply
    1,428,493.10x = 1,971,377.24 × 783,936.51
  4. Step 4: Simplify right side
    1,428,493.10x = 1,545,434,589,499.35
  5. Step 5: Solve for x
    x = 1,545,434,589,499.35/1,428,493.10
  6. Step 6: Final answer
    x = 1,081,863.54

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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.