Finding the Fourth Proportional to 481,207.70, 721,811.55 and 345,905.30
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Solution
The fourth proportional to 481,207.70, 721,811.55 and 345,905.30 is: 518,857.95
Step by Step Solution
- Step 1: Write the proportion equation
481,207.70 : 721,811.55 = 345,905.30 : x - Step 2: Convert to fraction form
481,207.70/721,811.55 = 345,905.30/x - Step 3: Cross multiply
481,207.70x = 721,811.55 × 345,905.30 - Step 4: Simplify right side
481,207.70x = 249,678,440,746.22 - Step 5: Solve for x
x = 249,678,440,746.22/481,207.70 - Step 6: Final answer
x = 518,857.95
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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.