Finding the Fourth Proportional to 744,658,390.80, 1,116,987,586.20 and 664,304,511.60
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Solution
The fourth proportional to 744,658,390.80, 1,116,987,586.20 and 664,304,511.60 is: 996,456,767.40
Step by Step Solution
- Step 1: Write the proportion equation
744,658,390.80 : 1,116,987,586.20 = 664,304,511.60 : x - Step 2: Convert to fraction form
744,658,390.80/1,116,987,586.20 = 664,304,511.60/x - Step 3: Cross multiply
744,658,390.80x = 1,116,987,586.20 × 664,304,511.60 - Step 4: Simplify right side
744,658,390.80x = 742,019,892,913,853,952 - Step 5: Solve for x
x = 742,019,892,913,853,952/744,658,390.80 - Step 6: Final answer
x = 996,456,767.40
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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.