Finding the Fourth Proportional to 1,424,625,991.77, 1,965,984,054.99 and 789,587,481.92
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Solution
The fourth proportional to 1,424,625,991.77, 1,965,984,054.99 and 789,587,481.92 is: 1,089,630,828.34
Step by Step Solution
- Step 1: Write the proportion equation
1,424,625,991.77 : 1,965,984,054.99 = 789,587,481.92 : x - Step 2: Convert to fraction form
1,424,625,991.77/1,965,984,054.99 = 789,587,481.92/x - Step 3: Cross multiply
1,424,625,991.77x = 1,965,984,054.99 × 789,587,481.92 - Step 4: Simplify right side
1,424,625,991.77x = 1,552,316,399,480,723,968 - Step 5: Solve for x
x = 1,552,316,399,480,723,968/1,424,625,991.77 - Step 6: Final answer
x = 1,089,630,828.34
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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.