Finding the Fourth Proportional to 828,782.62, 1,143,821.20 and 466,221.76
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Solution
The fourth proportional to 828,782.62, 1,143,821.20 and 466,221.76 is: 643,442.95
Step by Step Solution
- Step 1: Write the proportion equation
828,782.62 : 1,143,821.20 = 466,221.76 : x - Step 2: Convert to fraction form
828,782.62/1,143,821.20 = 466,221.76/x - Step 3: Cross multiply
828,782.62x = 1,143,821.20 × 466,221.76 - Step 4: Simplify right side
828,782.62x = 533,274,332,989.31 - Step 5: Solve for x
x = 533,274,332,989.31/828,782.62 - Step 6: Final answer
x = 643,442.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.