Finding the Fourth Proportional to 542,383.40, 748,438.79 and 300,645.41
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Solution
The fourth proportional to 542,383.40, 748,438.79 and 300,645.41 is: 414,862.78
Step by Step Solution
- Step 1: Write the proportion equation
542,383.40 : 748,438.79 = 300,645.41 : x - Step 2: Convert to fraction form
542,383.40/748,438.79 = 300,645.41/x - Step 3: Cross multiply
542,383.40x = 748,438.79 × 300,645.41 - Step 4: Simplify right side
542,383.40x = 225,014,681,634.03 - Step 5: Solve for x
x = 225,014,681,634.03/542,383.40 - Step 6: Final answer
x = 414,862.78
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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.