Finding the Fourth Proportional to 783,105.80, 1,174,658.70 and 689,793.80
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Solution
The fourth proportional to 783,105.80, 1,174,658.70 and 689,793.80 is: 1,034,690.70
Step by Step Solution
- Step 1: Write the proportion equation
783,105.80 : 1,174,658.70 = 689,793.80 : x - Step 2: Convert to fraction form
783,105.80/1,174,658.70 = 689,793.80/x - Step 3: Cross multiply
783,105.80x = 1,174,658.70 × 689,793.80 - Step 4: Simplify right side
783,105.80x = 810,272,288,376.06 - Step 5: Solve for x
x = 810,272,288,376.06/783,105.80 - Step 6: Final answer
x = 1,034,690.70
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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.