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Finding the Fourth Proportional to 1,117,608, 1,675,245 and 518,074.80

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Solution

The fourth proportional to 1,117,608, 1,675,245 and 518,074.80 is: 776,571.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,608 : 1,675,245 = 518,074.80 : x
  2. Step 2: Convert to fraction form
    1,117,608/1,675,245 = 518,074.80/x
  3. Step 3: Cross multiply
    1,117,608x = 1,675,245 × 518,074.80
  4. Step 4: Simplify right side
    1,117,608x = 867,902,218,326
  5. Step 5: Solve for x
    x = 867,902,218,326/1,117,608
  6. Step 6: Final answer
    x = 776,571.23

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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.