Finding the Fourth Proportional to 1,387,245.12, 2,080,867.44 and 389,973.12
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Solution
The fourth proportional to 1,387,245.12, 2,080,867.44 and 389,973.12 is: 584,959.61
Step by Step Solution
- Step 1: Write the proportion equation
1,387,245.12 : 2,080,867.44 = 389,973.12 : x - Step 2: Convert to fraction form
1,387,245.12/2,080,867.44 = 389,973.12/x - Step 3: Cross multiply
1,387,245.12x = 2,080,867.44 × 389,973.12 - Step 4: Simplify right side
1,387,245.12x = 811,482,367,883.21 - Step 5: Solve for x
x = 811,482,367,883.21/1,387,245.12 - Step 6: Final answer
x = 584,959.61
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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.