Finding the Fourth Proportional to 1,225,623,922.62, 1,691,882,897.91 and 823,970,615.58
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Solution
The fourth proportional to 1,225,623,922.62, 1,691,882,897.91 and 823,970,615.58 is: 1,137,430,305.62
Step by Step Solution
- Step 1: Write the proportion equation
1,225,623,922.62 : 1,691,882,897.91 = 823,970,615.58 : x - Step 2: Convert to fraction form
1,225,623,922.62/1,691,882,897.91 = 823,970,615.58/x - Step 3: Cross multiply
1,225,623,922.62x = 1,691,882,897.91 × 823,970,615.58 - Step 4: Simplify right side
1,225,623,922.62x = 1,394,061,792,880,177,152 - Step 5: Solve for x
x = 1,394,061,792,880,177,152/1,225,623,922.62 - Step 6: Final answer
x = 1,137,430,305.62
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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.