Finding the Fourth Proportional to 754,382,243.80, 1,131,573,365.70 and 663,682,979.80
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Solution
The fourth proportional to 754,382,243.80, 1,131,573,365.70 and 663,682,979.80 is: 995,524,469.70
Step by Step Solution
- Step 1: Write the proportion equation
754,382,243.80 : 1,131,573,365.70 = 663,682,979.80 : x - Step 2: Convert to fraction form
754,382,243.80/1,131,573,365.70 = 663,682,979.80/x - Step 3: Cross multiply
754,382,243.80x = 1,131,573,365.70 × 663,682,979.80 - Step 4: Simplify right side
754,382,243.80x = 751,005,983,210,091,136 - Step 5: Solve for x
x = 751,005,983,210,091,136/754,382,243.80 - Step 6: Final answer
x = 995,524,469.70
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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.