Finding the Fourth Proportional to 1,921,019,892.26, 2,881,699,986.99 and 540,846,357.62
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Solution
The fourth proportional to 1,921,019,892.26, 2,881,699,986.99 and 540,846,357.62 is: 811,317,440.28
Step by Step Solution
- Step 1: Write the proportion equation
1,921,019,892.26 : 2,881,699,986.99 = 540,846,357.62 : x - Step 2: Convert to fraction form
1,921,019,892.26/2,881,699,986.99 = 540,846,357.62/x - Step 3: Cross multiply
1,921,019,892.26x = 2,881,699,986.99 × 540,846,357.62 - Step 4: Simplify right side
1,921,019,892.26x = 1,558,556,941,717,142,784 - Step 5: Solve for x
x = 1,558,556,941,717,142,784/1,921,019,892.26 - Step 6: Final answer
x = 811,317,440.28
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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.