Finding the Fourth Proportional to 3,939,304,743.36, 5,436,369,412.16 and 2,155,116,806.19
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Solution
The fourth proportional to 3,939,304,743.36, 5,436,369,412.16 and 2,155,116,806.19 is: 2,974,131,692.79
Step by Step Solution
- Step 1: Write the proportion equation
3,939,304,743.36 : 5,436,369,412.16 = 2,155,116,806.19 : x - Step 2: Convert to fraction form
3,939,304,743.36/5,436,369,412.16 = 2,155,116,806.19/x - Step 3: Cross multiply
3,939,304,743.36x = 5,436,369,412.16 × 2,155,116,806.19 - Step 4: Simplify right side
3,939,304,743.36x = 11,716,011,084,792,492,032 - Step 5: Solve for x
x = 11,716,011,084,792,492,032/3,939,304,743.36 - Step 6: Final answer
x = 2,974,131,692.79
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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.