Finding the Fourth Proportional to 1,087,787,534.40, 1,628,209,220.40 and 858,205,022.40
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Solution
The fourth proportional to 1,087,787,534.40, 1,628,209,220.40 and 858,205,022.40 is: 1,284,568,250.95
Step by Step Solution
- Step 1: Write the proportion equation
1,087,787,534.40 : 1,628,209,220.40 = 858,205,022.40 : x - Step 2: Convert to fraction form
1,087,787,534.40/1,628,209,220.40 = 858,205,022.40/x - Step 3: Cross multiply
1,087,787,534.40x = 1,628,209,220.40 × 858,205,022.40 - Step 4: Simplify right side
1,087,787,534.40x = 1,397,337,330,465,268,480 - Step 5: Solve for x
x = 1,397,337,330,465,268,480/1,087,787,534.40 - Step 6: Final answer
x = 1,284,568,250.95
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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.