Finding the Fourth Proportional to 856,516.10, 1,284,774.15 and 257,569.70
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Solution
The fourth proportional to 856,516.10, 1,284,774.15 and 257,569.70 is: 386,354.55
Step by Step Solution
- Step 1: Write the proportion equation
856,516.10 : 1,284,774.15 = 257,569.70 : x - Step 2: Convert to fraction form
856,516.10/1,284,774.15 = 257,569.70/x - Step 3: Cross multiply
856,516.10x = 1,284,774.15 × 257,569.70 - Step 4: Simplify right side
856,516.10x = 330,918,892,383.26 - Step 5: Solve for x
x = 330,918,892,383.26/856,516.10 - Step 6: Final answer
x = 386,354.55
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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.