Finding the Third Proportional to 198,972,786 and 428,178,660
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Solution
The third proportional to 198,972,786 and 428,178,660 is: 921,417,288.09
Step by Step Solution
- Step 1: Write the proportion equation
198,972,786 : 428,178,660 = 428,178,660 : x - Step 2: Convert to fraction form
198,972,786/428,178,660 = 428,178,660/x - Step 3: Cross multiply
198,972,786x = 428,178,660 × 428,178,660 - Step 4: Simplify right side
198,972,786x = 183,336,964,879,395,584 - Step 5: Solve for x
x = 183,336,964,879,395,584/198,972,786 - Step 6: Final answer
x = 921,417,288.09
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These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.