Home / 1,078,736.31-1,489,215.74-788,021.47

Finding the Fourth Proportional to 1,078,736.31, 1,489,215.74 and 788,021.47

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Solution

The fourth proportional to 1,078,736.31, 1,489,215.74 and 788,021.47 is: 1,087,878.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,736.31 : 1,489,215.74 = 788,021.47 : x
  2. Step 2: Convert to fraction form
    1,078,736.31/1,489,215.74 = 788,021.47/x
  3. Step 3: Cross multiply
    1,078,736.31x = 1,489,215.74 × 788,021.47
  4. Step 4: Simplify right side
    1,078,736.31x = 1,173,533,982,138.30
  5. Step 5: Solve for x
    x = 1,173,533,982,138.30/1,078,736.31
  6. Step 6: Final answer
    x = 1,087,878.45

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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.