Finding the Fourth Proportional to 782,486.55, 1,174,165.92 and 422,650.14
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Solution
The fourth proportional to 782,486.55, 1,174,165.92 and 422,650.14 is: 634,210.76
Step by Step Solution
- Step 1: Write the proportion equation
782,486.55 : 1,174,165.92 = 422,650.14 : x - Step 2: Convert to fraction form
782,486.55/1,174,165.92 = 422,650.14/x - Step 3: Cross multiply
782,486.55x = 1,174,165.92 × 422,650.14 - Step 4: Simplify right side
782,486.55x = 496,261,390,471.23 - Step 5: Solve for x
x = 496,261,390,471.23/782,486.55 - Step 6: Final answer
x = 634,210.76
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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.