Finding the Fourth Proportional to 315,759,122.37, 471,325,939.83 and 278,483,850.63
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Solution
The fourth proportional to 315,759,122.37, 471,325,939.83 and 278,483,850.63 is: 415,686,050.94
Step by Step Solution
- Step 1: Write the proportion equation
315,759,122.37 : 471,325,939.83 = 278,483,850.63 : x - Step 2: Convert to fraction form
315,759,122.37/471,325,939.83 = 278,483,850.63/x - Step 3: Cross multiply
315,759,122.37x = 471,325,939.83 × 278,483,850.63 - Step 4: Simplify right side
315,759,122.37x = 131,256,662,625,662,080 - Step 5: Solve for x
x = 131,256,662,625,662,080/315,759,122.37 - Step 6: Final answer
x = 415,686,050.94
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.