Finding the Fourth Proportional to 873,504,991.40, 1,310,257,487.10 and 806,992,197.80
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Solution
The fourth proportional to 873,504,991.40, 1,310,257,487.10 and 806,992,197.80 is: 1,210,488,296.70
Step by Step Solution
- Step 1: Write the proportion equation
873,504,991.40 : 1,310,257,487.10 = 806,992,197.80 : x - Step 2: Convert to fraction form
873,504,991.40/1,310,257,487.10 = 806,992,197.80/x - Step 3: Cross multiply
873,504,991.40x = 1,310,257,487.10 × 806,992,197.80 - Step 4: Simplify right side
873,504,991.40x = 1,057,367,569,198,733,952 - Step 5: Solve for x
x = 1,057,367,569,198,733,952/873,504,991.40 - Step 6: Final answer
x = 1,210,488,296.70
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Double scale
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Similar ratio
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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.