Finding the Fourth Proportional to 393,986,452.80, 590,979,679.20 and 106,772,116.80
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Solution
The fourth proportional to 393,986,452.80, 590,979,679.20 and 106,772,116.80 is: 160,158,175.20
Step by Step Solution
- Step 1: Write the proportion equation
393,986,452.80 : 590,979,679.20 = 106,772,116.80 : x - Step 2: Convert to fraction form
393,986,452.80/590,979,679.20 = 106,772,116.80/x - Step 3: Cross multiply
393,986,452.80x = 590,979,679.20 × 106,772,116.80 - Step 4: Simplify right side
393,986,452.80x = 63,100,151,333,968,936 - Step 5: Solve for x
x = 63,100,151,333,968,936/393,986,452.80 - Step 6: Final answer
x = 160,158,175.20
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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.