Finding the Fourth Proportional to 2,109,129.12, 3,164,232.96 and 613,221.12
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Solution
The fourth proportional to 2,109,129.12, 3,164,232.96 and 613,221.12 is: 919,988.47
Step by Step Solution
- Step 1: Write the proportion equation
2,109,129.12 : 3,164,232.96 = 613,221.12 : x - Step 2: Convert to fraction form
2,109,129.12/3,164,232.96 = 613,221.12/x - Step 3: Cross multiply
2,109,129.12x = 3,164,232.96 × 613,221.12 - Step 4: Simplify right side
2,109,129.12x = 1,940,374,479,672.12 - Step 5: Solve for x
x = 1,940,374,479,672.12/2,109,129.12 - Step 6: Final answer
x = 919,988.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.