Finding the Fourth Proportional to 1,557,477,982.67, 2,149,319,720.93 and 852,629,964.12
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Solution
The fourth proportional to 1,557,477,982.67, 2,149,319,720.93 and 852,629,964.12 is: 1,176,629,407.88
Step by Step Solution
- Step 1: Write the proportion equation
1,557,477,982.67 : 2,149,319,720.93 = 852,629,964.12 : x - Step 2: Convert to fraction form
1,557,477,982.67/2,149,319,720.93 = 852,629,964.12/x - Step 3: Cross multiply
1,557,477,982.67x = 2,149,319,720.93 × 852,629,964.12 - Step 4: Simplify right side
1,557,477,982.67x = 1,832,574,396,534,691,328 - Step 5: Solve for x
x = 1,832,574,396,534,691,328/1,557,477,982.67 - Step 6: Final answer
x = 1,176,629,407.88
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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.