Finding the Fourth Proportional to 389,746,418.96, 584,629,115.16 and 130,965,389.84
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Solution
The fourth proportional to 389,746,418.96, 584,629,115.16 and 130,965,389.84 is: 196,451,272.56
Step by Step Solution
- Step 1: Write the proportion equation
389,746,418.96 : 584,629,115.16 = 130,965,389.84 : x - Step 2: Convert to fraction form
389,746,418.96/584,629,115.16 = 130,965,389.84/x - Step 3: Cross multiply
389,746,418.96x = 584,629,115.16 × 130,965,389.84 - Step 4: Simplify right side
389,746,418.96x = 76,566,179,978,743,648 - Step 5: Solve for x
x = 76,566,179,978,743,648/389,746,418.96 - Step 6: Final answer
x = 196,451,272.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.