Finding the Fourth Proportional to 1,297,987,621.92, 1,791,310,800.96 and 733,276,644.12
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Solution
The fourth proportional to 1,297,987,621.92, 1,791,310,800.96 and 733,276,644.12 is: 1,011,971,416.77
Step by Step Solution
- Step 1: Write the proportion equation
1,297,987,621.92 : 1,791,310,800.96 = 733,276,644.12 : x - Step 2: Convert to fraction form
1,297,987,621.92/1,791,310,800.96 = 733,276,644.12/x - Step 3: Cross multiply
1,297,987,621.92x = 1,791,310,800.96 × 733,276,644.12 - Step 4: Simplify right side
1,297,987,621.92x = 1,313,526,372,703,858,176 - Step 5: Solve for x
x = 1,313,526,372,703,858,176/1,297,987,621.92 - Step 6: Final answer
x = 1,011,971,416.77
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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.