Finding the Fourth Proportional to 7,621,517,191.18, 11,428,350,430.59 and 3,420,868,895.86
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Solution
The fourth proportional to 7,621,517,191.18, 11,428,350,430.59 and 3,420,868,895.86 is: 5,129,541,472.95
Step by Step Solution
- Step 1: Write the proportion equation
7,621,517,191.18 : 11,428,350,430.59 = 3,420,868,895.86 : x - Step 2: Convert to fraction form
7,621,517,191.18/11,428,350,430.59 = 3,420,868,895.86/x - Step 3: Cross multiply
7,621,517,191.18x = 11,428,350,430.59 × 3,420,868,895.86 - Step 4: Simplify right side
7,621,517,191.18x = 39,094,888,518,993,567,744 - Step 5: Solve for x
x = 39,094,888,518,993,567,744/7,621,517,191.18 - Step 6: Final answer
x = 5,129,541,472.95
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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.