Finding the Fourth Proportional to 642,518.60, 887,090.10 and 413,178.44
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Solution
The fourth proportional to 642,518.60, 887,090.10 and 413,178.44 is: 570,452.75
Step by Step Solution
- Step 1: Write the proportion equation
642,518.60 : 887,090.10 = 413,178.44 : x - Step 2: Convert to fraction form
642,518.60/887,090.10 = 413,178.44/x - Step 3: Cross multiply
642,518.60x = 887,090.10 × 413,178.44 - Step 4: Simplify right side
642,518.60x = 366,526,503,657.44 - Step 5: Solve for x
x = 366,526,503,657.44/642,518.60 - Step 6: Final answer
x = 570,452.75
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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.