Finding the Fourth Proportional to 811,272.81, 1,217,108.48 and 278,801.49
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Solution
The fourth proportional to 811,272.81, 1,217,108.48 and 278,801.49 is: 418,270.71
Step by Step Solution
- Step 1: Write the proportion equation
811,272.81 : 1,217,108.48 = 278,801.49 : x - Step 2: Convert to fraction form
811,272.81/1,217,108.48 = 278,801.49/x - Step 3: Cross multiply
811,272.81x = 1,217,108.48 × 278,801.49 - Step 4: Simplify right side
811,272.81x = 339,331,650,236.09 - Step 5: Solve for x
x = 339,331,650,236.09/811,272.81 - Step 6: Final answer
x = 418,270.71
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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.