Finding the Fourth Proportional to 812,702.76, 1,219,134.34 and 280,153.68
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Solution
The fourth proportional to 812,702.76, 1,219,134.34 and 280,153.68 is: 420,258.17
Step by Step Solution
- Step 1: Write the proportion equation
812,702.76 : 1,219,134.34 = 280,153.68 : x - Step 2: Convert to fraction form
812,702.76/1,219,134.34 = 280,153.68/x - Step 3: Cross multiply
812,702.76x = 1,219,134.34 × 280,153.68 - Step 4: Simplify right side
812,702.76x = 341,544,971,765.37 - Step 5: Solve for x
x = 341,544,971,765.37/812,702.76 - Step 6: Final answer
x = 420,258.17
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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.