Finding the Fourth Proportional to 638,627.20, 881,311.68 and 352,157.44
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Solution
The fourth proportional to 638,627.20, 881,311.68 and 352,157.44 is: 485,980.66
Step by Step Solution
- Step 1: Write the proportion equation
638,627.20 : 881,311.68 = 352,157.44 : x - Step 2: Convert to fraction form
638,627.20/881,311.68 = 352,157.44/x - Step 3: Cross multiply
638,627.20x = 881,311.68 × 352,157.44 - Step 4: Simplify right side
638,627.20x = 310,360,465,070.90 - Step 5: Solve for x
x = 310,360,465,070.90/638,627.20 - Step 6: Final answer
x = 485,980.66
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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.