Finding the Fourth Proportional to 1,010,015,431.68, 1,394,783,926.80 and 954,990,423.84
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Solution
The fourth proportional to 1,010,015,431.68, 1,394,783,926.80 and 954,990,423.84 is: 1,318,796,972.44
Step by Step Solution
- Step 1: Write the proportion equation
1,010,015,431.68 : 1,394,783,926.80 = 954,990,423.84 : x - Step 2: Convert to fraction form
1,010,015,431.68/1,394,783,926.80 = 954,990,423.84/x - Step 3: Cross multiply
1,010,015,431.68x = 1,394,783,926.80 × 954,990,423.84 - Step 4: Simplify right side
1,010,015,431.68x = 1,332,005,293,419,951,616 - Step 5: Solve for x
x = 1,332,005,293,419,951,616/1,010,015,431.68 - Step 6: Final answer
x = 1,318,796,972.44
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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.