Finding the Fourth Proportional to 719,109.81, 992,365.28 and 392,429.28
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Solution
The fourth proportional to 719,109.81, 992,365.28 and 392,429.28 is: 541,548.99
Step by Step Solution
- Step 1: Write the proportion equation
719,109.81 : 992,365.28 = 392,429.28 : x - Step 2: Convert to fraction form
719,109.81/992,365.28 = 392,429.28/x - Step 3: Cross multiply
719,109.81x = 992,365.28 × 392,429.28 - Step 4: Simplify right side
719,109.81x = 389,433,192,327.40 - Step 5: Solve for x
x = 389,433,192,327.40/719,109.81 - Step 6: Final answer
x = 541,548.99
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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.