Finding the Fourth Proportional to 1,681,515,730.80, 2,522,273,596.20 and 981,289,069.20
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Solution
The fourth proportional to 1,681,515,730.80, 2,522,273,596.20 and 981,289,069.20 is: 1,471,933,603.80
Step by Step Solution
- Step 1: Write the proportion equation
1,681,515,730.80 : 2,522,273,596.20 = 981,289,069.20 : x - Step 2: Convert to fraction form
1,681,515,730.80/2,522,273,596.20 = 981,289,069.20/x - Step 3: Cross multiply
1,681,515,730.80x = 2,522,273,596.20 × 981,289,069.20 - Step 4: Simplify right side
1,681,515,730.80x = 2,475,079,509,482,834,432 - Step 5: Solve for x
x = 2,475,079,509,482,834,432/1,681,515,730.80 - Step 6: Final answer
x = 1,471,933,603.80
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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.