Finding the Fourth Proportional to 1,288,190,853.99, 1,932,285,985.74 and 368,067,203.55
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Solution
The fourth proportional to 1,288,190,853.99, 1,932,285,985.74 and 368,067,203.55 is: 552,100,720.97
Step by Step Solution
- Step 1: Write the proportion equation
1,288,190,853.99 : 1,932,285,985.74 = 368,067,203.55 : x - Step 2: Convert to fraction form
1,288,190,853.99/1,932,285,985.74 = 368,067,203.55/x - Step 3: Cross multiply
1,288,190,853.99x = 1,932,285,985.74 × 368,067,203.55 - Step 4: Simplify right side
1,288,190,853.99x = 711,211,099,230,177,024 - Step 5: Solve for x
x = 711,211,099,230,177,024/1,288,190,853.99 - Step 6: Final answer
x = 552,100,720.97
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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.