Finding the Fourth Proportional to 1,972,621,302.26, 2,721,185,330.81 and 1,219,693,796.33
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Solution
The fourth proportional to 1,972,621,302.26, 2,721,185,330.81 and 1,219,693,796.33 is: 1,682,539,300.80
Step by Step Solution
- Step 1: Write the proportion equation
1,972,621,302.26 : 2,721,185,330.81 = 1,219,693,796.33 : x - Step 2: Convert to fraction form
1,972,621,302.26/2,721,185,330.81 = 1,219,693,796.33/x - Step 3: Cross multiply
1,972,621,302.26x = 2,721,185,330.81 × 1,219,693,796.33 - Step 4: Simplify right side
1,972,621,302.26x = 3,319,012,866,633,451,520 - Step 5: Solve for x
x = 3,319,012,866,633,451,520/1,972,621,302.26 - Step 6: Final answer
x = 1,682,539,300.80
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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.