Finding the Fourth Proportional to 738,355.13, 1,018,930.49 and 398,823.38
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Solution
The fourth proportional to 738,355.13, 1,018,930.49 and 398,823.38 is: 550,376.48
Step by Step Solution
- Step 1: Write the proportion equation
738,355.13 : 1,018,930.49 = 398,823.38 : x - Step 2: Convert to fraction form
738,355.13/1,018,930.49 = 398,823.38/x - Step 3: Cross multiply
738,355.13x = 1,018,930.49 × 398,823.38 - Step 4: Simplify right side
738,355.13x = 406,373,294,918.09 - Step 5: Solve for x
x = 406,373,294,918.09/738,355.13 - Step 6: Final answer
x = 550,376.48
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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.