Home / 1,107,637.73-1,528,824.45-721,415.56

Finding the Fourth Proportional to 1,107,637.73, 1,528,824.45 and 721,415.56

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Solution

The fourth proportional to 1,107,637.73, 1,528,824.45 and 721,415.56 is: 995,738.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,637.73 : 1,528,824.45 = 721,415.56 : x
  2. Step 2: Convert to fraction form
    1,107,637.73/1,528,824.45 = 721,415.56/x
  3. Step 3: Cross multiply
    1,107,637.73x = 1,528,824.45 × 721,415.56
  4. Step 4: Simplify right side
    1,107,637.73x = 1,102,917,746,738.44
  5. Step 5: Solve for x
    x = 1,102,917,746,738.44/1,107,637.73
  6. Step 6: Final answer
    x = 995,738.69

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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.