Home / 1,328,044.78-1,987,943.67-719,321.27

Finding the Fourth Proportional to 1,328,044.78, 1,987,943.67 and 719,321.27

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Solution

The fourth proportional to 1,328,044.78, 1,987,943.67 and 719,321.27 is: 1,076,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,044.78 : 1,987,943.67 = 719,321.27 : x
  2. Step 2: Convert to fraction form
    1,328,044.78/1,987,943.67 = 719,321.27/x
  3. Step 3: Cross multiply
    1,328,044.78x = 1,987,943.67 × 719,321.27
  4. Step 4: Simplify right side
    1,328,044.78x = 1,429,970,161,796.25
  5. Step 5: Solve for x
    x = 1,429,970,161,796.25/1,328,044.78
  6. Step 6: Final answer
    x = 1,076,748.46

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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.