Finding the Fourth Proportional to 1,990,462,809.20, 2,985,694,213.80 and 536,440,233.20
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Solution
The fourth proportional to 1,990,462,809.20, 2,985,694,213.80 and 536,440,233.20 is: 804,660,349.80
Step by Step Solution
- Step 1: Write the proportion equation
1,990,462,809.20 : 2,985,694,213.80 = 536,440,233.20 : x - Step 2: Convert to fraction form
1,990,462,809.20/2,985,694,213.80 = 536,440,233.20/x - Step 3: Cross multiply
1,990,462,809.20x = 2,985,694,213.80 × 536,440,233.20 - Step 4: Simplify right side
1,990,462,809.20x = 1,601,646,500,314,762,752 - Step 5: Solve for x
x = 1,601,646,500,314,762,752/1,990,462,809.20 - Step 6: Final answer
x = 804,660,349.80
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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.