Finding the Fourth Proportional to 2,312,126.77, 3,190,711.44 and 1,279,636.56
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Solution
The fourth proportional to 2,312,126.77, 3,190,711.44 and 1,279,636.56 is: 1,765,885.45
Step by Step Solution
- Step 1: Write the proportion equation
2,312,126.77 : 3,190,711.44 = 1,279,636.56 : x - Step 2: Convert to fraction form
2,312,126.77/3,190,711.44 = 1,279,636.56/x - Step 3: Cross multiply
2,312,126.77x = 3,190,711.44 × 1,279,636.56 - Step 4: Simplify right side
2,312,126.77x = 4,082,951,019,011.03 - Step 5: Solve for x
x = 4,082,951,019,011.03/2,312,126.77 - Step 6: Final answer
x = 1,765,885.45
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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.