Finding the Fourth Proportional to 1,131,421,881.02, 1,561,350,914.97 and 629,622,069.62
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Solution
The fourth proportional to 1,131,421,881.02, 1,561,350,914.97 and 629,622,069.62 is: 868,872,178.43
Step by Step Solution
- Step 1: Write the proportion equation
1,131,421,881.02 : 1,561,350,914.97 = 629,622,069.62 : x - Step 2: Convert to fraction form
1,131,421,881.02/1,561,350,914.97 = 629,622,069.62/x - Step 3: Cross multiply
1,131,421,881.02x = 1,561,350,914.97 × 629,622,069.62 - Step 4: Simplify right side
1,131,421,881.02x = 983,060,994,486,492,032 - Step 5: Solve for x
x = 983,060,994,486,492,032/1,131,421,881.02 - Step 6: Final answer
x = 868,872,178.43
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1.5x scale
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.