Finding the Fourth Proportional to 3,218,790,287.12, 4,828,415,272.37 and 857,938,878.98
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Solution
The fourth proportional to 3,218,790,287.12, 4,828,415,272.37 and 857,938,878.98 is: 1,286,969,580.64
Step by Step Solution
- Step 1: Write the proportion equation
3,218,790,287.12 : 4,828,415,272.37 = 857,938,878.98 : x - Step 2: Convert to fraction form
3,218,790,287.12/4,828,415,272.37 = 857,938,878.98/x - Step 3: Cross multiply
3,218,790,287.12x = 4,828,415,272.37 × 857,938,878.98 - Step 4: Simplify right side
3,218,790,287.12x = 4,142,485,185,998,597,120 - Step 5: Solve for x
x = 4,142,485,185,998,597,120/3,218,790,287.12 - Step 6: Final answer
x = 1,286,969,580.64
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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.