Finding the Fourth Proportional to 720,039,481.98, 993,649,194.99 and 406,768,003.26
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Solution
The fourth proportional to 720,039,481.98, 993,649,194.99 and 406,768,003.26 is: 561,336,855.97
Step by Step Solution
- Step 1: Write the proportion equation
720,039,481.98 : 993,649,194.99 = 406,768,003.26 : x - Step 2: Convert to fraction form
720,039,481.98/993,649,194.99 = 406,768,003.26/x - Step 3: Cross multiply
720,039,481.98x = 993,649,194.99 × 406,768,003.26 - Step 4: Simplify right side
720,039,481.98x = 404,184,698,986,988,672 - Step 5: Solve for x
x = 404,184,698,986,988,672/720,039,481.98 - Step 6: Final answer
x = 561,336,855.97
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.