Finding the Fourth Proportional to 2,378,485.86, 3,282,319.08 and 1,290,757.20
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Solution
The fourth proportional to 2,378,485.86, 3,282,319.08 and 1,290,757.20 is: 1,781,249.60
Step by Step Solution
- Step 1: Write the proportion equation
2,378,485.86 : 3,282,319.08 = 1,290,757.20 : x - Step 2: Convert to fraction form
2,378,485.86/3,282,319.08 = 1,290,757.20/x - Step 3: Cross multiply
2,378,485.86x = 3,282,319.08 × 1,290,757.20 - Step 4: Simplify right side
2,378,485.86x = 4,236,676,985,207.38 - Step 5: Solve for x
x = 4,236,676,985,207.38/2,378,485.86 - Step 6: Final answer
x = 1,781,249.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.