Finding the Fourth Proportional to 726,387,996.80, 1,089,581,995.20 and 624,351,324.80
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Solution
The fourth proportional to 726,387,996.80, 1,089,581,995.20 and 624,351,324.80 is: 936,526,987.20
Step by Step Solution
- Step 1: Write the proportion equation
726,387,996.80 : 1,089,581,995.20 = 624,351,324.80 : x - Step 2: Convert to fraction form
726,387,996.80/1,089,581,995.20 = 624,351,324.80/x - Step 3: Cross multiply
726,387,996.80x = 1,089,581,995.20 × 624,351,324.80 - Step 4: Simplify right side
726,387,996.80x = 680,281,962,181,347,200 - Step 5: Solve for x
x = 680,281,962,181,347,200/726,387,996.80 - Step 6: Final answer
x = 936,526,987.20
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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.