Finding the Fourth Proportional to 1,189,714,236.70, 1,641,121,842.97 and 742,901,968.26
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Solution
The fourth proportional to 1,189,714,236.70, 1,641,121,842.97 and 742,901,968.26 is: 1,024,777,723.66
Step by Step Solution
- Step 1: Write the proportion equation
1,189,714,236.70 : 1,641,121,842.97 = 742,901,968.26 : x - Step 2: Convert to fraction form
1,189,714,236.70/1,641,121,842.97 = 742,901,968.26/x - Step 3: Cross multiply
1,189,714,236.70x = 1,641,121,842.97 × 742,901,968.26 - Step 4: Simplify right side
1,189,714,236.70x = 1,219,192,647,296,891,648 - Step 5: Solve for x
x = 1,219,192,647,296,891,648/1,189,714,236.70 - Step 6: Final answer
x = 1,024,777,723.66
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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.