Finding the Fourth Proportional to 1,311,539,920.20, 1,966,050,168.30 and 758,274,409.80
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Solution
The fourth proportional to 1,311,539,920.20, 1,966,050,168.30 and 758,274,409.80 is: 1,136,683,304.90
Step by Step Solution
- Step 1: Write the proportion equation
1,311,539,920.20 : 1,966,050,168.30 = 758,274,409.80 : x - Step 2: Convert to fraction form
1,311,539,920.20/1,966,050,168.30 = 758,274,409.80/x - Step 3: Cross multiply
1,311,539,920.20x = 1,966,050,168.30 × 758,274,409.80 - Step 4: Simplify right side
1,311,539,920.20x = 1,490,805,531,004,872,960 - Step 5: Solve for x
x = 1,490,805,531,004,872,960/1,311,539,920.20 - Step 6: Final answer
x = 1,136,683,304.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.