Finding the Fourth Proportional to 763,391,996.80, 1,145,087,995.20 and 711,995,747.20
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Solution
The fourth proportional to 763,391,996.80, 1,145,087,995.20 and 711,995,747.20 is: 1,067,993,620.80
Step by Step Solution
- Step 1: Write the proportion equation
763,391,996.80 : 1,145,087,995.20 = 711,995,747.20 : x - Step 2: Convert to fraction form
763,391,996.80/1,145,087,995.20 = 711,995,747.20/x - Step 3: Cross multiply
763,391,996.80x = 1,145,087,995.20 × 711,995,747.20 - Step 4: Simplify right side
763,391,996.80x = 815,297,782,752,174,080 - Step 5: Solve for x
x = 815,297,782,752,174,080/763,391,996.80 - Step 6: Final answer
x = 1,067,993,620.80
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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.