Home / 1,289,226.78-1,931,182.97-755,128.58

Finding the Fourth Proportional to 1,289,226.78, 1,931,182.97 and 755,128.58

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Solution

The fourth proportional to 1,289,226.78, 1,931,182.97 and 755,128.58 is: 1,131,136.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,226.78 : 1,931,182.97 = 755,128.58 : x
  2. Step 2: Convert to fraction form
    1,289,226.78/1,931,182.97 = 755,128.58/x
  3. Step 3: Cross multiply
    1,289,226.78x = 1,931,182.97 × 755,128.58
  4. Step 4: Simplify right side
    1,289,226.78x = 1,458,291,440,424.73
  5. Step 5: Solve for x
    x = 1,458,291,440,424.73/1,289,226.78
  6. Step 6: Final answer
    x = 1,131,136.48

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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.