Finding the Fourth Proportional to 3,957,772,383.72, 5,461,704,763.56 and 2,149,268,444.79
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Solution
The fourth proportional to 3,957,772,383.72, 5,461,704,763.56 and 2,149,268,444.79 is: 2,965,978,981.35
Step by Step Solution
- Step 1: Write the proportion equation
3,957,772,383.72 : 5,461,704,763.56 = 2,149,268,444.79 : x - Step 2: Convert to fraction form
3,957,772,383.72/5,461,704,763.56 = 2,149,268,444.79/x - Step 3: Cross multiply
3,957,772,383.72x = 5,461,704,763.56 × 2,149,268,444.79 - Step 4: Simplify right side
3,957,772,383.72x = 11,738,669,703,078,735,872 - Step 5: Solve for x
x = 11,738,669,703,078,735,872/3,957,772,383.72 - Step 6: Final answer
x = 2,965,978,981.35
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1.5x scale
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.