Finding the Fourth Proportional to 1,378,080.12, 2,067,396.10 and 771,730.71
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Solution
The fourth proportional to 1,378,080.12, 2,067,396.10 and 771,730.71 is: 1,157,750.59
Step by Step Solution
- Step 1: Write the proportion equation
1,378,080.12 : 2,067,396.10 = 771,730.71 : x - Step 2: Convert to fraction form
1,378,080.12/2,067,396.10 = 771,730.71/x - Step 3: Cross multiply
1,378,080.12x = 2,067,396.10 × 771,730.71 - Step 4: Simplify right side
1,378,080.12x = 1,595,473,066,392.26 - Step 5: Solve for x
x = 1,595,473,066,392.26/1,378,080.12 - Step 6: Final answer
x = 1,157,750.59
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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.