Finding the Fourth Proportional to 1,392,367,990.05, 2,088,789,926.84 and 574,032,947.49
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Solution
The fourth proportional to 1,392,367,990.05, 2,088,789,926.84 and 574,032,947.49 is: 861,147,517.72
Step by Step Solution
- Step 1: Write the proportion equation
1,392,367,990.05 : 2,088,789,926.84 = 574,032,947.49 : x - Step 2: Convert to fraction form
1,392,367,990.05/2,088,789,926.84 = 574,032,947.49/x - Step 3: Cross multiply
1,392,367,990.05x = 2,088,789,926.84 × 574,032,947.49 - Step 4: Simplify right side
1,392,367,990.05x = 1,199,034,238,388,516,608 - Step 5: Solve for x
x = 1,199,034,238,388,516,608/1,392,367,990.05 - Step 6: Final answer
x = 861,147,517.72
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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.