Finding the Fourth Proportional to 1,901,268,530.68, 2,849,889,951.92 and 639,531,501.28
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Solution
The fourth proportional to 1,901,268,530.68, 2,849,889,951.92 and 639,531,501.28 is: 958,620,189.64
Step by Step Solution
- Step 1: Write the proportion equation
1,901,268,530.68 : 2,849,889,951.92 = 639,531,501.28 : x - Step 2: Convert to fraction form
1,901,268,530.68/2,849,889,951.92 = 639,531,501.28/x - Step 3: Cross multiply
1,901,268,530.68x = 2,849,889,951.92 × 639,531,501.28 - Step 4: Simplify right side
1,901,268,530.68x = 1,822,594,399,434,184,704 - Step 5: Solve for x
x = 1,822,594,399,434,184,704/1,901,268,530.68 - Step 6: Final answer
x = 958,620,189.64
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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.