Finding the Fourth Proportional to 1,726,204,943.80, 2,589,307,415.70 and 991,540,905.40
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Solution
The fourth proportional to 1,726,204,943.80, 2,589,307,415.70 and 991,540,905.40 is: 1,487,311,358.10
Step by Step Solution
- Step 1: Write the proportion equation
1,726,204,943.80 : 2,589,307,415.70 = 991,540,905.40 : x - Step 2: Convert to fraction form
1,726,204,943.80/2,589,307,415.70 = 991,540,905.40/x - Step 3: Cross multiply
1,726,204,943.80x = 2,589,307,415.70 × 991,540,905.40 - Step 4: Simplify right side
1,726,204,943.80x = 2,567,404,219,322,112,000 - Step 5: Solve for x
x = 2,567,404,219,322,112,000/1,726,204,943.80 - Step 6: Final answer
x = 1,487,311,358.10
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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.