Finding the Fourth Proportional to 572,715.05, 790,300.68 and 331,013.28
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Solution
The fourth proportional to 572,715.05, 790,300.68 and 331,013.28 is: 456,771.69
Step by Step Solution
- Step 1: Write the proportion equation
572,715.05 : 790,300.68 = 331,013.28 : x - Step 2: Convert to fraction form
572,715.05/790,300.68 = 331,013.28/x - Step 3: Cross multiply
572,715.05x = 790,300.68 × 331,013.28 - Step 4: Simplify right side
572,715.05x = 261,600,020,273.03 - Step 5: Solve for x
x = 261,600,020,273.03/572,715.05 - Step 6: Final answer
x = 456,771.69
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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.