Finding the Fourth Proportional to 19,991,861.32, 29,987,791.98 and 4,845,793
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Solution
The fourth proportional to 19,991,861.32, 29,987,791.98 and 4,845,793 is: 7,268,689.50
Step by Step Solution
- Step 1: Write the proportion equation
19,991,861.32 : 29,987,791.98 = 4,845,793 : x - Step 2: Convert to fraction form
19,991,861.32/29,987,791.98 = 4,845,793/x - Step 3: Cross multiply
19,991,861.32x = 29,987,791.98 × 4,845,793 - Step 4: Simplify right side
19,991,861.32x = 145,314,632,462,140.16 - Step 5: Solve for x
x = 145,314,632,462,140.16/19,991,861.32 - Step 6: Final answer
x = 7,268,689.50
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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.