Finding the Fourth Proportional to 8,142,799.19, 11,230,836.20 and 5,531,316.84
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Solution
The fourth proportional to 8,142,799.19, 11,230,836.20 and 5,531,316.84 is: 7,628,987.52
Step by Step Solution
- Step 1: Write the proportion equation
8,142,799.19 : 11,230,836.20 = 5,531,316.84 : x - Step 2: Convert to fraction form
8,142,799.19/11,230,836.20 = 5,531,316.84/x - Step 3: Cross multiply
8,142,799.19x = 11,230,836.20 × 5,531,316.84 - Step 4: Simplify right side
8,142,799.19x = 62,121,313,400,341.60 - Step 5: Solve for x
x = 62,121,313,400,341.60/8,142,799.19 - Step 6: Final answer
x = 7,628,987.52
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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.