Finding the Fourth Proportional to 896,914,891.80, 1,345,372,337.70 and 810,821,449.80
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Solution
The fourth proportional to 896,914,891.80, 1,345,372,337.70 and 810,821,449.80 is: 1,216,232,174.70
Step by Step Solution
- Step 1: Write the proportion equation
896,914,891.80 : 1,345,372,337.70 = 810,821,449.80 : x - Step 2: Convert to fraction form
896,914,891.80/1,345,372,337.70 = 810,821,449.80/x - Step 3: Cross multiply
896,914,891.80x = 1,345,372,337.70 × 810,821,449.80 - Step 4: Simplify right side
896,914,891.80x = 1,090,856,749,374,729,216 - Step 5: Solve for x
x = 1,090,856,749,374,729,216/896,914,891.80 - Step 6: Final answer
x = 1,216,232,174.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.