Home / 1,272,439-1,755,928.38-728,556.76

Finding the Fourth Proportional to 1,272,439, 1,755,928.38 and 728,556.76

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Solution

The fourth proportional to 1,272,439, 1,755,928.38 and 728,556.76 is: 1,005,386.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,439 : 1,755,928.38 = 728,556.76 : x
  2. Step 2: Convert to fraction form
    1,272,439/1,755,928.38 = 728,556.76/x
  3. Step 3: Cross multiply
    1,272,439x = 1,755,928.38 × 728,556.76
  4. Step 4: Simplify right side
    1,272,439x = 1,279,293,491,324.85
  5. Step 5: Solve for x
    x = 1,279,293,491,324.85/1,272,439
  6. Step 6: Final answer
    x = 1,005,386.89

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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.