Finding the Fourth Proportional to 1,185,115,536.96, 1,636,026,541.92 and 789,297,230.40
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Solution
The fourth proportional to 1,185,115,536.96, 1,636,026,541.92 and 789,297,230.40 is: 1,089,607,872.08
Step by Step Solution
- Step 1: Write the proportion equation
1,185,115,536.96 : 1,636,026,541.92 = 789,297,230.40 : x - Step 2: Convert to fraction form
1,185,115,536.96/1,636,026,541.92 = 789,297,230.40/x - Step 3: Cross multiply
1,185,115,536.96x = 1,636,026,541.92 × 789,297,230.40 - Step 4: Simplify right side
1,185,115,536.96x = 1,291,311,218,398,345,472 - Step 5: Solve for x
x = 1,291,311,218,398,345,472/1,185,115,536.96 - Step 6: Final answer
x = 1,089,607,872.08
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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.