Finding the Fourth Proportional to 1,378,993,019.10, 2,068,489,528.65 and 1,206,806,135.10
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Solution
The fourth proportional to 1,378,993,019.10, 2,068,489,528.65 and 1,206,806,135.10 is: 1,810,209,202.65
Step by Step Solution
- Step 1: Write the proportion equation
1,378,993,019.10 : 2,068,489,528.65 = 1,206,806,135.10 : x - Step 2: Convert to fraction form
1,378,993,019.10/2,068,489,528.65 = 1,206,806,135.10/x - Step 3: Cross multiply
1,378,993,019.10x = 2,068,489,528.65 × 1,206,806,135.10 - Step 4: Simplify right side
1,378,993,019.10x = 2,496,265,853,564,926,976 - Step 5: Solve for x
x = 2,496,265,853,564,926,976/1,378,993,019.10 - Step 6: Final answer
x = 1,810,209,202.65
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Similar ratio
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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.