Finding the Fourth Proportional to 1,278,302,371.23, 1,765,275,597.30 and 1,208,661,342.03
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Solution
The fourth proportional to 1,278,302,371.23, 1,765,275,597.30 and 1,208,661,342.03 is: 1,669,104,603.50
Step by Step Solution
- Step 1: Write the proportion equation
1,278,302,371.23 : 1,765,275,597.30 = 1,208,661,342.03 : x - Step 2: Convert to fraction form
1,278,302,371.23/1,765,275,597.30 = 1,208,661,342.03/x - Step 3: Cross multiply
1,278,302,371.23x = 1,765,275,597.30 × 1,208,661,342.03 - Step 4: Simplify right side
1,278,302,371.23x = 2,133,620,372,485,427,712 - Step 5: Solve for x
x = 2,133,620,372,485,427,712/1,278,302,371.23 - Step 6: Final answer
x = 1,669,104,603.50
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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.