Finding the Fourth Proportional to 542,409.70, 812,812.65 and 392,964.70
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Solution
The fourth proportional to 542,409.70, 812,812.65 and 392,964.70 is: 588,866.09
Step by Step Solution
- Step 1: Write the proportion equation
542,409.70 : 812,812.65 = 392,964.70 : x - Step 2: Convert to fraction form
542,409.70/812,812.65 = 392,964.70/x - Step 3: Cross multiply
542,409.70x = 812,812.65 × 392,964.70 - Step 4: Simplify right side
542,409.70x = 319,406,679,163.46 - Step 5: Solve for x
x = 319,406,679,163.46/542,409.70 - Step 6: Final answer
x = 588,866.09
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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.