Finding the Fourth Proportional to 1,021,796,615.20, 1,532,694,922.80 and 699,310,343.20
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Solution
The fourth proportional to 1,021,796,615.20, 1,532,694,922.80 and 699,310,343.20 is: 1,048,965,514.80
Step by Step Solution
- Step 1: Write the proportion equation
1,021,796,615.20 : 1,532,694,922.80 = 699,310,343.20 : x - Step 2: Convert to fraction form
1,021,796,615.20/1,532,694,922.80 = 699,310,343.20/x - Step 3: Cross multiply
1,021,796,615.20x = 1,532,694,922.80 × 699,310,343.20 - Step 4: Simplify right side
1,021,796,615.20x = 1,071,829,412,484,165,504 - Step 5: Solve for x
x = 1,071,829,412,484,165,504/1,021,796,615.20 - Step 6: Final answer
x = 1,048,965,514.80
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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.