Finding the Fourth Proportional to 771,190,005.99, 1,156,782,485.84 and 279,902,620.83
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Solution
The fourth proportional to 771,190,005.99, 1,156,782,485.84 and 279,902,620.83 is: 419,853,015.47
Step by Step Solution
- Step 1: Write the proportion equation
771,190,005.99 : 1,156,782,485.84 = 279,902,620.83 : x - Step 2: Convert to fraction form
771,190,005.99/1,156,782,485.84 = 279,902,620.83/x - Step 3: Cross multiply
771,190,005.99x = 1,156,782,485.84 × 279,902,620.83 - Step 4: Simplify right side
771,190,005.99x = 323,786,449,515,458,816 - Step 5: Solve for x
x = 323,786,449,515,458,816/771,190,005.99 - Step 6: Final answer
x = 419,853,015.47
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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.