Finding the Fourth Proportional to 664,362,076.80, 996,543,115.20 and 276,941,587.80
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Solution
The fourth proportional to 664,362,076.80, 996,543,115.20 and 276,941,587.80 is: 415,412,381.70
Step by Step Solution
- Step 1: Write the proportion equation
664,362,076.80 : 996,543,115.20 = 276,941,587.80 : x - Step 2: Convert to fraction form
664,362,076.80/996,543,115.20 = 276,941,587.80/x - Step 3: Cross multiply
664,362,076.80x = 996,543,115.20 × 276,941,587.80 - Step 4: Simplify right side
664,362,076.80x = 275,984,232,634,646,336 - Step 5: Solve for x
x = 275,984,232,634,646,336/664,362,076.80 - Step 6: Final answer
x = 415,412,381.70
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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.