Finding the Fourth Proportional to 1,119,744,154.40, 1,679,616,231.60 and 774,601,728.80
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Solution
The fourth proportional to 1,119,744,154.40, 1,679,616,231.60 and 774,601,728.80 is: 1,161,902,593.20
Step by Step Solution
- Step 1: Write the proportion equation
1,119,744,154.40 : 1,679,616,231.60 = 774,601,728.80 : x - Step 2: Convert to fraction form
1,119,744,154.40/1,679,616,231.60 = 774,601,728.80/x - Step 3: Cross multiply
1,119,744,154.40x = 1,679,616,231.60 × 774,601,728.80 - Step 4: Simplify right side
1,119,744,154.40x = 1,301,033,636,717,901,056 - Step 5: Solve for x
x = 1,301,033,636,717,901,056/1,119,744,154.40 - Step 6: Final answer
x = 1,161,902,593.20
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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.