Home / 1,515,333.36-2,091,208.86-861,942.48

Finding the Fourth Proportional to 1,515,333.36, 2,091,208.86 and 861,942.48

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Solution

The fourth proportional to 1,515,333.36, 2,091,208.86 and 861,942.48 is: 1,189,508.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,333.36 : 2,091,208.86 = 861,942.48 : x
  2. Step 2: Convert to fraction form
    1,515,333.36/2,091,208.86 = 861,942.48/x
  3. Step 3: Cross multiply
    1,515,333.36x = 2,091,208.86 × 861,942.48
  4. Step 4: Simplify right side
    1,515,333.36x = 1,802,501,750,986.37
  5. Step 5: Solve for x
    x = 1,802,501,750,986.37/1,515,333.36
  6. Step 6: Final answer
    x = 1,189,508.39

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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.