Home / 1,286,891.27-1,775,172.11-802,615.65

Finding the Fourth Proportional to 1,286,891.27, 1,775,172.11 and 802,615.65

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Solution

The fourth proportional to 1,286,891.27, 1,775,172.11 and 802,615.65 is: 1,107,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,891.27 : 1,775,172.11 = 802,615.65 : x
  2. Step 2: Convert to fraction form
    1,286,891.27/1,775,172.11 = 802,615.65/x
  3. Step 3: Cross multiply
    1,286,891.27x = 1,775,172.11 × 802,615.65
  4. Step 4: Simplify right side
    1,286,891.27x = 1,424,780,916,929.52
  5. Step 5: Solve for x
    x = 1,424,780,916,929.52/1,286,891.27
  6. Step 6: Final answer
    x = 1,107,149.42

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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.