Finding the Fourth Proportional to 2,159,958.07, 2,980,684.94 and 1,193,067.55
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Solution
The fourth proportional to 2,159,958.07, 2,980,684.94 and 1,193,067.55 is: 1,646,401.63
Step by Step Solution
- Step 1: Write the proportion equation
2,159,958.07 : 2,980,684.94 = 1,193,067.55 : x - Step 2: Convert to fraction form
2,159,958.07/2,980,684.94 = 1,193,067.55/x - Step 3: Cross multiply
2,159,958.07x = 2,980,684.94 × 1,193,067.55 - Step 4: Simplify right side
2,159,958.07x = 3,556,158,478,687.70 - Step 5: Solve for x
x = 3,556,158,478,687.70/2,159,958.07 - Step 6: Final answer
x = 1,646,401.63
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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.