Finding the Fourth Proportional to 389,446.70, 546,012.70 and 389,446.70
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Solution
The fourth proportional to 389,446.70, 546,012.70 and 389,446.70 is: 546,012.70
Step by Step Solution
- Step 1: Write the proportion equation
389,446.70 : 546,012.70 = 389,446.70 : x - Step 2: Convert to fraction form
389,446.70/546,012.70 = 389,446.70/x - Step 3: Cross multiply
389,446.70x = 546,012.70 × 389,446.70 - Step 4: Simplify right side
389,446.70x = 212,642,844,173.09 - Step 5: Solve for x
x = 212,642,844,173.09/389,446.70 - Step 6: Final answer
x = 546,012.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.