Finding the Fourth Proportional to 3,838,917,465.71, 5,297,725,692.90 and 2,145,400,375.65
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Solution
The fourth proportional to 3,838,917,465.71, 5,297,725,692.90 and 2,145,400,375.65 is: 2,960,663,466.50
Step by Step Solution
- Step 1: Write the proportion equation
3,838,917,465.71 : 5,297,725,692.90 = 2,145,400,375.65 : x - Step 2: Convert to fraction form
3,838,917,465.71/5,297,725,692.90 = 2,145,400,375.65/x - Step 3: Cross multiply
3,838,917,465.71x = 5,297,725,692.90 × 2,145,400,375.65 - Step 4: Simplify right side
3,838,917,465.71x = 11,365,742,691,627,591,680 - Step 5: Solve for x
x = 11,365,742,691,627,591,680/3,838,917,465.71 - Step 6: Final answer
x = 2,960,663,466.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.