Finding the Fourth Proportional to 515,466,879.54, 711,367,717.78 and 303,782,644.09
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Solution
The fourth proportional to 515,466,879.54, 711,367,717.78 and 303,782,644.09 is: 419,233,853.43
Step by Step Solution
- Step 1: Write the proportion equation
515,466,879.54 : 711,367,717.78 = 303,782,644.09 : x - Step 2: Convert to fraction form
515,466,879.54/711,367,717.78 = 303,782,644.09/x - Step 3: Cross multiply
515,466,879.54x = 711,367,717.78 × 303,782,644.09 - Step 4: Simplify right side
515,466,879.54x = 216,101,166,225,892,640 - Step 5: Solve for x
x = 216,101,166,225,892,640/515,466,879.54 - Step 6: Final answer
x = 419,233,853.43
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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.