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Finding the Fourth Proportional to 2,619,968.97, 3,929,953.22 and 726,710.49

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Solution

The fourth proportional to 2,619,968.97, 3,929,953.22 and 726,710.49 is: 1,090,065.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619,968.97 : 3,929,953.22 = 726,710.49 : x
  2. Step 2: Convert to fraction form
    2,619,968.97/3,929,953.22 = 726,710.49/x
  3. Step 3: Cross multiply
    2,619,968.97x = 3,929,953.22 × 726,710.49
  4. Step 4: Simplify right side
    2,619,968.97x = 2,855,938,226,549.73
  5. Step 5: Solve for x
    x = 2,855,938,226,549.73/2,619,968.97
  6. Step 6: Final answer
    x = 1,090,065.67

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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.