Finding the Fourth Proportional to 781,082.18, 1,171,201.80 and 354,385.12
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Solution
The fourth proportional to 781,082.18, 1,171,201.80 and 354,385.12 is: 531,386.45
Step by Step Solution
- Step 1: Write the proportion equation
781,082.18 : 1,171,201.80 = 354,385.12 : x - Step 2: Convert to fraction form
781,082.18/1,171,201.80 = 354,385.12/x - Step 3: Cross multiply
781,082.18x = 1,171,201.80 × 354,385.12 - Step 4: Simplify right side
781,082.18x = 415,056,490,437.22 - Step 5: Solve for x
x = 415,056,490,437.22/781,082.18 - Step 6: Final answer
x = 531,386.45
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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.