Finding the Fourth Proportional to 1,420,338.28, 2,128,082.46 and 781,177
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Solution
The fourth proportional to 1,420,338.28, 2,128,082.46 and 781,177 is: 1,170,431.79
Step by Step Solution
- Step 1: Write the proportion equation
1,420,338.28 : 2,128,082.46 = 781,177 : x - Step 2: Convert to fraction form
1,420,338.28/2,128,082.46 = 781,177/x - Step 3: Cross multiply
1,420,338.28x = 2,128,082.46 × 781,177 - Step 4: Simplify right side
1,420,338.28x = 1,662,409,071,855.42 - Step 5: Solve for x
x = 1,662,409,071,855.42/1,420,338.28 - Step 6: Final answer
x = 1,170,431.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.