Finding the Fourth Proportional to 5,135,913,490.35, 7,701,441,714.99 and 1,989,601,748.58
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Solution
The fourth proportional to 5,135,913,490.35, 7,701,441,714.99 and 1,989,601,748.58 is: 2,983,461,838.20
Step by Step Solution
- Step 1: Write the proportion equation
5,135,913,490.35 : 7,701,441,714.99 = 1,989,601,748.58 : x - Step 2: Convert to fraction form
5,135,913,490.35/7,701,441,714.99 = 1,989,601,748.58/x - Step 3: Cross multiply
5,135,913,490.35x = 7,701,441,714.99 × 1,989,601,748.58 - Step 4: Simplify right side
5,135,913,490.35x = 15,322,801,902,731,057,152 - Step 5: Solve for x
x = 15,322,801,902,731,057,152/5,135,913,490.35 - Step 6: Final answer
x = 2,983,461,838.20
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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.