Finding the Fourth Proportional to 707,904,651.12, 976,858,533.80 and 394,625,007.60
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Solution
The fourth proportional to 707,904,651.12, 976,858,533.80 and 394,625,007.60 is: 544,554,701.99
Step by Step Solution
- Step 1: Write the proportion equation
707,904,651.12 : 976,858,533.80 = 394,625,007.60 : x - Step 2: Convert to fraction form
707,904,651.12/976,858,533.80 = 394,625,007.60/x - Step 3: Cross multiply
707,904,651.12x = 976,858,533.80 × 394,625,007.60 - Step 4: Simplify right side
707,904,651.12x = 385,492,806,324,949,888 - Step 5: Solve for x
x = 385,492,806,324,949,888/707,904,651.12 - Step 6: Final answer
x = 544,554,701.99
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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.