Finding the Fourth Proportional to 392,787,431.08, 589,159,789.32 and 120,158,198.08
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Solution
The fourth proportional to 392,787,431.08, 589,159,789.32 and 120,158,198.08 is: 180,230,763.68
Step by Step Solution
- Step 1: Write the proportion equation
392,787,431.08 : 589,159,789.32 = 120,158,198.08 : x - Step 2: Convert to fraction form
392,787,431.08/589,159,789.32 = 120,158,198.08/x - Step 3: Cross multiply
392,787,431.08x = 589,159,789.32 × 120,158,198.08 - Step 4: Simplify right side
392,787,431.08x = 70,792,378,665,883,632 - Step 5: Solve for x
x = 70,792,378,665,883,632/392,787,431.08 - Step 6: Final answer
x = 180,230,763.68
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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.