Finding the Fourth Proportional to 2,188,364.20, 3,281,120.70 and 1,964,415.40
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Solution
The fourth proportional to 2,188,364.20, 3,281,120.70 and 1,964,415.40 is: 2,945,343.39
Step by Step Solution
- Step 1: Write the proportion equation
2,188,364.20 : 3,281,120.70 = 1,964,415.40 : x - Step 2: Convert to fraction form
2,188,364.20/3,281,120.70 = 1,964,415.40/x - Step 3: Cross multiply
2,188,364.20x = 3,281,120.70 × 1,964,415.40 - Step 4: Simplify right side
2,188,364.20x = 6,445,484,032,338.78 - Step 5: Solve for x
x = 6,445,484,032,338.78/2,188,364.20 - Step 6: Final answer
x = 2,945,343.39
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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.