Finding the Fourth Proportional to 755,311.36, 1,042,353.15 and 411,170.20
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Solution
The fourth proportional to 755,311.36, 1,042,353.15 and 411,170.20 is: 567,427.65
Step by Step Solution
- Step 1: Write the proportion equation
755,311.36 : 1,042,353.15 = 411,170.20 : x - Step 2: Convert to fraction form
755,311.36/1,042,353.15 = 411,170.20/x - Step 3: Cross multiply
755,311.36x = 1,042,353.15 × 411,170.20 - Step 4: Simplify right side
755,311.36x = 428,584,553,156.13 - Step 5: Solve for x
x = 428,584,553,156.13/755,311.36 - Step 6: Final answer
x = 567,427.65
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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.