Finding the Fourth Proportional to 719,261.19, 992,575.54 and 396,971.28
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Solution
The fourth proportional to 719,261.19, 992,575.54 and 396,971.28 is: 547,817.66
Step by Step Solution
- Step 1: Write the proportion equation
719,261.19 : 992,575.54 = 396,971.28 : x - Step 2: Convert to fraction form
719,261.19/992,575.54 = 396,971.28/x - Step 3: Cross multiply
719,261.19x = 992,575.54 × 396,971.28 - Step 4: Simplify right side
719,261.19x = 394,023,982,610.49 - Step 5: Solve for x
x = 394,023,982,610.49/719,261.19 - Step 6: Final answer
x = 547,817.66
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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.