Finding the Fourth Proportional to 12,780,796.74, 19,171,364.64 and 4,261,135.92
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Solution
The fourth proportional to 12,780,796.74, 19,171,364.64 and 4,261,135.92 is: 6,391,760.40
Step by Step Solution
- Step 1: Write the proportion equation
12,780,796.74 : 19,171,364.64 = 4,261,135.92 : x - Step 2: Convert to fraction form
12,780,796.74/19,171,364.64 = 4,261,135.92/x - Step 3: Cross multiply
12,780,796.74x = 19,171,364.64 × 4,261,135.92 - Step 4: Simplify right side
12,780,796.74x = 81,691,790,502,921.88 - Step 5: Solve for x
x = 81,691,790,502,921.88/12,780,796.74 - Step 6: Final answer
x = 6,391,760.40
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1.5x scale
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.