Finding the Fourth Proportional to 788,686.10, 1,183,029.15 and 339,622.10
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Solution
The fourth proportional to 788,686.10, 1,183,029.15 and 339,622.10 is: 509,433.15
Step by Step Solution
- Step 1: Write the proportion equation
788,686.10 : 1,183,029.15 = 339,622.10 : x - Step 2: Convert to fraction form
788,686.10/1,183,029.15 = 339,622.10/x - Step 3: Cross multiply
788,686.10x = 1,183,029.15 × 339,622.10 - Step 4: Simplify right side
788,686.10x = 401,782,844,284.22 - Step 5: Solve for x
x = 401,782,844,284.22/788,686.10 - Step 6: Final answer
x = 509,433.15
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Similar ratio
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1.5x scale
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.