Finding the Fourth Proportional to 778,243.20, 1,073,961.20 and 438,711.68
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Solution
The fourth proportional to 778,243.20, 1,073,961.20 and 438,711.68 is: 605,413.99
Step by Step Solution
- Step 1: Write the proportion equation
778,243.20 : 1,073,961.20 = 438,711.68 : x - Step 2: Convert to fraction form
778,243.20/1,073,961.20 = 438,711.68/x - Step 3: Cross multiply
778,243.20x = 1,073,961.20 × 438,711.68 - Step 4: Simplify right side
778,243.20x = 471,159,322,306.82 - Step 5: Solve for x
x = 471,159,322,306.82/778,243.20 - Step 6: Final answer
x = 605,413.99
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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.