Finding the Fourth Proportional to 674,817.67, 931,220.11 and 399,354.09
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Solution
The fourth proportional to 674,817.67, 931,220.11 and 399,354.09 is: 551,091.91
Step by Step Solution
- Step 1: Write the proportion equation
674,817.67 : 931,220.11 = 399,354.09 : x - Step 2: Convert to fraction form
674,817.67/931,220.11 = 399,354.09/x - Step 3: Cross multiply
674,817.67x = 931,220.11 × 399,354.09 - Step 4: Simplify right side
674,817.67x = 371,886,559,618.75 - Step 5: Solve for x
x = 371,886,559,618.75/674,817.67 - Step 6: Final answer
x = 551,091.91
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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.