Finding the Fourth Proportional to 979,932,620.40, 1,470,185,906.16 and 289,858,250.88
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Solution
The fourth proportional to 979,932,620.40, 1,470,185,906.16 and 289,858,250.88 is: 434,872,261.99
Step by Step Solution
- Step 1: Write the proportion equation
979,932,620.40 : 1,470,185,906.16 = 289,858,250.88 : x - Step 2: Convert to fraction form
979,932,620.40/1,470,185,906.16 = 289,858,250.88/x - Step 3: Cross multiply
979,932,620.40x = 1,470,185,906.16 × 289,858,250.88 - Step 4: Simplify right side
979,932,620.40x = 426,145,515,227,965,440 - Step 5: Solve for x
x = 426,145,515,227,965,440/979,932,620.40 - Step 6: Final answer
x = 434,872,261.99
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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.