Home / 2,628,428.76-3,942,864.36-831,272.22

Finding the Fourth Proportional to 2,628,428.76, 3,942,864.36 and 831,272.22

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Solution

The fourth proportional to 2,628,428.76, 3,942,864.36 and 831,272.22 is: 1,246,978.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628,428.76 : 3,942,864.36 = 831,272.22 : x
  2. Step 2: Convert to fraction form
    2,628,428.76/3,942,864.36 = 831,272.22/x
  3. Step 3: Cross multiply
    2,628,428.76x = 3,942,864.36 × 831,272.22
  4. Step 4: Simplify right side
    2,628,428.76x = 3,277,593,609,696.08
  5. Step 5: Solve for x
    x = 3,277,593,609,696.08/2,628,428.76
  6. Step 6: Final answer
    x = 1,246,978.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.