Finding the Fourth Proportional to 1,424,626,911.48, 1,965,985,324.86 and 789,588,402.66
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Solution
The fourth proportional to 1,424,626,911.48, 1,965,985,324.86 and 789,588,402.66 is: 1,089,632,099.32
Step by Step Solution
- Step 1: Write the proportion equation
1,424,626,911.48 : 1,965,985,324.86 = 789,588,402.66 : x - Step 2: Convert to fraction form
1,424,626,911.48/1,965,985,324.86 = 789,588,402.66/x - Step 3: Cross multiply
1,424,626,911.48x = 1,965,985,324.86 × 789,588,402.66 - Step 4: Simplify right side
1,424,626,911.48x = 1,552,319,212,309,208,320 - Step 5: Solve for x
x = 1,552,319,212,309,208,320/1,424,626,911.48 - Step 6: Final answer
x = 1,089,632,099.32
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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.