Finding the Fourth Proportional to 19,430,742.80, 29,146,114.20 and 5,965,821.20
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Solution
The fourth proportional to 19,430,742.80, 29,146,114.20 and 5,965,821.20 is: 8,948,731.80
Step by Step Solution
- Step 1: Write the proportion equation
19,430,742.80 : 29,146,114.20 = 5,965,821.20 : x - Step 2: Convert to fraction form
19,430,742.80/29,146,114.20 = 5,965,821.20/x - Step 3: Cross multiply
19,430,742.80x = 29,146,114.20 × 5,965,821.20 - Step 4: Simplify right side
19,430,742.80x = 173,880,505,991,981.03 - Step 5: Solve for x
x = 173,880,505,991,981.03/19,430,742.80 - Step 6: Final answer
x = 8,948,731.80
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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.