Finding the Fourth Proportional to 771,190,006.24, 1,156,782,486.21 and 279,902,621.08
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Solution
The fourth proportional to 771,190,006.24, 1,156,782,486.21 and 279,902,621.08 is: 419,853,015.85
Step by Step Solution
- Step 1: Write the proportion equation
771,190,006.24 : 1,156,782,486.21 = 279,902,621.08 : x - Step 2: Convert to fraction form
771,190,006.24/1,156,782,486.21 = 279,902,621.08/x - Step 3: Cross multiply
771,190,006.24x = 1,156,782,486.21 × 279,902,621.08 - Step 4: Simplify right side
771,190,006.24x = 323,786,449,909,617,920 - Step 5: Solve for x
x = 323,786,449,909,617,920/771,190,006.24 - Step 6: Final answer
x = 419,853,015.85
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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.