Home / 1,078,721.26-1,488,079.40-670,668.36

Finding the Fourth Proportional to 1,078,721.26, 1,488,079.40 and 670,668.36

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Solution

The fourth proportional to 1,078,721.26, 1,488,079.40 and 670,668.36 is: 925,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,721.26 : 1,488,079.40 = 670,668.36 : x
  2. Step 2: Convert to fraction form
    1,078,721.26/1,488,079.40 = 670,668.36/x
  3. Step 3: Cross multiply
    1,078,721.26x = 1,488,079.40 × 670,668.36
  4. Step 4: Simplify right side
    1,078,721.26x = 998,007,770,747.78
  5. Step 5: Solve for x
    x = 998,007,770,747.78/1,078,721.26
  6. Step 6: Final answer
    x = 925,176.70

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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.