Finding the Fourth Proportional to 1,192,821,589.94, 1,788,633,766.45 and 694,992,987.63
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Solution
The fourth proportional to 1,192,821,589.94, 1,788,633,766.45 and 694,992,987.63 is: 1,042,140,698.66
Step by Step Solution
- Step 1: Write the proportion equation
1,192,821,589.94 : 1,788,633,766.45 = 694,992,987.63 : x - Step 2: Convert to fraction form
1,192,821,589.94/1,788,633,766.45 = 694,992,987.63/x - Step 3: Cross multiply
1,192,821,589.94x = 1,788,633,766.45 × 694,992,987.63 - Step 4: Simplify right side
1,192,821,589.94x = 1,243,087,925,119,247,616 - Step 5: Solve for x
x = 1,243,087,925,119,247,616/1,192,821,589.94 - Step 6: Final answer
x = 1,042,140,698.66
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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.