Finding the Fourth Proportional to 7,908,906.30, 11,863,359.45 and 3,657,378.30
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Solution
The fourth proportional to 7,908,906.30, 11,863,359.45 and 3,657,378.30 is: 5,486,067.45
Step by Step Solution
- Step 1: Write the proportion equation
7,908,906.30 : 11,863,359.45 = 3,657,378.30 : x - Step 2: Convert to fraction form
7,908,906.30/11,863,359.45 = 3,657,378.30/x - Step 3: Cross multiply
7,908,906.30x = 11,863,359.45 × 3,657,378.30 - Step 4: Simplify right side
7,908,906.30x = 43,388,793,417,529.93 - Step 5: Solve for x
x = 43,388,793,417,529.93/7,908,906.30 - Step 6: Final answer
x = 5,486,067.45
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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.