Finding the Fourth Proportional to 1,726,277,208.40, 2,589,415,812.60 and 988,589,861.20
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Solution
The fourth proportional to 1,726,277,208.40, 2,589,415,812.60 and 988,589,861.20 is: 1,482,884,791.80
Step by Step Solution
- Step 1: Write the proportion equation
1,726,277,208.40 : 2,589,415,812.60 = 988,589,861.20 : x - Step 2: Convert to fraction form
1,726,277,208.40/2,589,415,812.60 = 988,589,861.20/x - Step 3: Cross multiply
1,726,277,208.40x = 2,589,415,812.60 × 988,589,861.20 - Step 4: Simplify right side
1,726,277,208.40x = 2,559,870,218,767,319,040 - Step 5: Solve for x
x = 2,559,870,218,767,319,040/1,726,277,208.40 - Step 6: Final answer
x = 1,482,884,791.80
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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.