Finding the Fourth Proportional to 3,319,855,233.80, 4,979,782,850.70 and 866,192,136.80
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Solution
The fourth proportional to 3,319,855,233.80, 4,979,782,850.70 and 866,192,136.80 is: 1,299,288,205.20
Step by Step Solution
- Step 1: Write the proportion equation
3,319,855,233.80 : 4,979,782,850.70 = 866,192,136.80 : x - Step 2: Convert to fraction form
3,319,855,233.80/4,979,782,850.70 = 866,192,136.80/x - Step 3: Cross multiply
3,319,855,233.80x = 4,979,782,850.70 × 866,192,136.80 - Step 4: Simplify right side
3,319,855,233.80x = 4,313,448,748,247,827,968 - Step 5: Solve for x
x = 4,313,448,748,247,827,968/3,319,855,233.80 - Step 6: Final answer
x = 1,299,288,205.20
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1.5x scale
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.