Finding the Fourth Proportional to 3,120,581.95, 4,306,030.13 and 1,724,955.05
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Solution
The fourth proportional to 3,120,581.95, 4,306,030.13 and 1,724,955.05 is: 2,380,231.80
Step by Step Solution
- Step 1: Write the proportion equation
3,120,581.95 : 4,306,030.13 = 1,724,955.05 : x - Step 2: Convert to fraction form
3,120,581.95/4,306,030.13 = 1,724,955.05/x - Step 3: Cross multiply
3,120,581.95x = 4,306,030.13 × 1,724,955.05 - Step 4: Simplify right side
3,120,581.95x = 7,427,708,408,500.73 - Step 5: Solve for x
x = 7,427,708,408,500.73/3,120,581.95 - Step 6: Final answer
x = 2,380,231.80
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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.