Finding the Fourth Proportional to 1,557,477,974.54, 2,149,319,709.70 and 852,629,955.96
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Solution
The fourth proportional to 1,557,477,974.54, 2,149,319,709.70 and 852,629,955.96 is: 1,176,629,396.62
Step by Step Solution
- Step 1: Write the proportion equation
1,557,477,974.54 : 2,149,319,709.70 = 852,629,955.96 : x - Step 2: Convert to fraction form
1,557,477,974.54/2,149,319,709.70 = 852,629,955.96/x - Step 3: Cross multiply
1,557,477,974.54x = 2,149,319,709.70 × 852,629,955.96 - Step 4: Simplify right side
1,557,477,974.54x = 1,832,574,369,425,470,976 - Step 5: Solve for x
x = 1,832,574,369,425,470,976/1,557,477,974.54 - Step 6: Final answer
x = 1,176,629,396.62
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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.