Finding the Fourth Proportional to 1,165,261,122.63, 1,608,060,994.41 and 629,412,785.15
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Solution
The fourth proportional to 1,165,261,122.63, 1,608,060,994.41 and 629,412,785.15 is: 868,589,991.99
Step by Step Solution
- Step 1: Write the proportion equation
1,165,261,122.63 : 1,608,060,994.41 = 629,412,785.15 : x - Step 2: Convert to fraction form
1,165,261,122.63/1,608,060,994.41 = 629,412,785.15/x - Step 3: Cross multiply
1,165,261,122.63x = 1,608,060,994.41 × 629,412,785.15 - Step 4: Simplify right side
1,165,261,122.63x = 1,012,134,149,174,636,416 - Step 5: Solve for x
x = 1,012,134,149,174,636,416/1,165,261,122.63 - Step 6: Final answer
x = 868,589,991.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.