Finding the Fourth Proportional to 403,691,562.79, 557,094,570.15 and 218,052,578.14
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Solution
The fourth proportional to 403,691,562.79, 557,094,570.15 and 218,052,578.14 is: 300,912,673.15
Step by Step Solution
- Step 1: Write the proportion equation
403,691,562.79 : 557,094,570.15 = 218,052,578.14 : x - Step 2: Convert to fraction form
403,691,562.79/557,094,570.15 = 218,052,578.14/x - Step 3: Cross multiply
403,691,562.79x = 557,094,570.15 × 218,052,578.14 - Step 4: Simplify right side
403,691,562.79x = 121,475,907,289,002,576 - Step 5: Solve for x
x = 121,475,907,289,002,576/403,691,562.79 - Step 6: Final answer
x = 300,912,673.15
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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.