Finding the Fourth Proportional to 719,158.70, 992,462.84 and 392,489.60
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Solution
The fourth proportional to 719,158.70, 992,462.84 and 392,489.60 is: 541,648.66
Step by Step Solution
- Step 1: Write the proportion equation
719,158.70 : 992,462.84 = 392,489.60 : x - Step 2: Convert to fraction form
719,158.70/992,462.84 = 392,489.60/x - Step 3: Cross multiply
719,158.70x = 992,462.84 × 392,489.60 - Step 4: Simplify right side
719,158.70x = 389,531,343,086.46 - Step 5: Solve for x
x = 389,531,343,086.46/719,158.70 - Step 6: Final answer
x = 541,648.66
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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.