Finding the Fourth Proportional to 1,288,190,855.49, 1,932,285,987.99 and 368,067,205.05
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Solution
The fourth proportional to 1,288,190,855.49, 1,932,285,987.99 and 368,067,205.05 is: 552,100,723.22
Step by Step Solution
- Step 1: Write the proportion equation
1,288,190,855.49 : 1,932,285,987.99 = 368,067,205.05 : x - Step 2: Convert to fraction form
1,288,190,855.49/1,932,285,987.99 = 368,067,205.05/x - Step 3: Cross multiply
1,288,190,855.49x = 1,932,285,987.99 × 368,067,205.05 - Step 4: Simplify right side
1,288,190,855.49x = 711,211,102,956,757,248 - Step 5: Solve for x
x = 711,211,102,956,757,248/1,288,190,855.49 - Step 6: Final answer
x = 552,100,723.22
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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.