Finding the Fourth Proportional to 712,529,517.57, 983,290,718.63 and 394,988,958.84
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Solution
The fourth proportional to 712,529,517.57, 983,290,718.63 and 394,988,958.84 is: 545,084,754.54
Step by Step Solution
- Step 1: Write the proportion equation
712,529,517.57 : 983,290,718.63 = 394,988,958.84 : x - Step 2: Convert to fraction form
712,529,517.57/983,290,718.63 = 394,988,958.84/x - Step 3: Cross multiply
712,529,517.57x = 983,290,718.63 × 394,988,958.84 - Step 4: Simplify right side
712,529,517.57x = 388,388,977,188,699,072 - Step 5: Solve for x
x = 388,388,977,188,699,072/712,529,517.57 - Step 6: Final answer
x = 545,084,754.54
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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.