Finding the Fourth Proportional to 5,214,991,210.80, 7,822,486,816.20 and 3,990,551,146.80
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Solution
The fourth proportional to 5,214,991,210.80, 7,822,486,816.20 and 3,990,551,146.80 is: 5,985,826,720.20
Step by Step Solution
- Step 1: Write the proportion equation
5,214,991,210.80 : 7,822,486,816.20 = 3,990,551,146.80 : x - Step 2: Convert to fraction form
5,214,991,210.80/7,822,486,816.20 = 3,990,551,146.80/x - Step 3: Cross multiply
5,214,991,210.80x = 7,822,486,816.20 × 3,990,551,146.80 - Step 4: Simplify right side
5,214,991,210.80x = 31,216,033,735,214,792,704 - Step 5: Solve for x
x = 31,216,033,735,214,792,704/5,214,991,210.80 - Step 6: Final answer
x = 5,985,826,720.20
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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.