Finding the Fourth Proportional to 783,082.10, 1,174,623.15 and 686,659.70
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Solution
The fourth proportional to 783,082.10, 1,174,623.15 and 686,659.70 is: 1,029,989.55
Step by Step Solution
- Step 1: Write the proportion equation
783,082.10 : 1,174,623.15 = 686,659.70 : x - Step 2: Convert to fraction form
783,082.10/1,174,623.15 = 686,659.70/x - Step 3: Cross multiply
783,082.10x = 1,174,623.15 × 686,659.70 - Step 4: Simplify right side
783,082.10x = 806,566,379,792.06 - Step 5: Solve for x
x = 806,566,379,792.06/783,082.10 - Step 6: Final answer
x = 1,029,989.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.