Finding the Fourth Proportional to 1,378,077.53, 2,067,392.22 and 771,728.12
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Solution
The fourth proportional to 1,378,077.53, 2,067,392.22 and 771,728.12 is: 1,157,746.71
Step by Step Solution
- Step 1: Write the proportion equation
1,378,077.53 : 2,067,392.22 = 771,728.12 : x - Step 2: Convert to fraction form
1,378,077.53/2,067,392.22 = 771,728.12/x - Step 3: Cross multiply
1,378,077.53x = 2,067,392.22 × 771,728.12 - Step 4: Simplify right side
1,378,077.53x = 1,595,464,717,394.09 - Step 5: Solve for x
x = 1,595,464,717,394.09/1,378,077.53 - Step 6: Final answer
x = 1,157,746.71
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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.