Finding the Fourth Proportional to 1,389,236,349.98, 1,917,149,509.77 and 762,745,161.26
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Solution
The fourth proportional to 1,389,236,349.98, 1,917,149,509.77 and 762,745,161.26 is: 1,052,590,160.06
Step by Step Solution
- Step 1: Write the proportion equation
1,389,236,349.98 : 1,917,149,509.77 = 762,745,161.26 : x - Step 2: Convert to fraction form
1,389,236,349.98/1,917,149,509.77 = 762,745,161.26/x - Step 3: Cross multiply
1,389,236,349.98x = 1,917,149,509.77 × 762,745,161.26 - Step 4: Simplify right side
1,389,236,349.98x = 1,462,296,511,991,019,264 - Step 5: Solve for x
x = 1,462,296,511,991,019,264/1,389,236,349.98 - Step 6: Final answer
x = 1,052,590,160.06
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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.