Finding the Fourth Proportional to 812,199.76, 1,120,799.33 and 449,597.99
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Solution
The fourth proportional to 812,199.76, 1,120,799.33 and 449,597.99 is: 620,425.12
Step by Step Solution
- Step 1: Write the proportion equation
812,199.76 : 1,120,799.33 = 449,597.99 : x - Step 2: Convert to fraction form
812,199.76/1,120,799.33 = 449,597.99/x - Step 3: Cross multiply
812,199.76x = 1,120,799.33 × 449,597.99 - Step 4: Simplify right side
812,199.76x = 503,909,128,201.35 - Step 5: Solve for x
x = 503,909,128,201.35/812,199.76 - Step 6: Final answer
x = 620,425.12
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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.