Finding the Fourth Proportional to 1,128,082.91, 1,691,282.79 and 678,698.48
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Solution
The fourth proportional to 1,128,082.91, 1,691,282.79 and 678,698.48 is: 1,017,541.39
Step by Step Solution
- Step 1: Write the proportion equation
1,128,082.91 : 1,691,282.79 = 678,698.48 : x - Step 2: Convert to fraction form
1,128,082.91/1,691,282.79 = 678,698.48/x - Step 3: Cross multiply
1,128,082.91x = 1,691,282.79 × 678,698.48 - Step 4: Simplify right side
1,128,082.91x = 1,147,871,050,366.75 - Step 5: Solve for x
x = 1,147,871,050,366.75/1,128,082.91 - Step 6: Final answer
x = 1,017,541.39
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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.