Finding the Fourth Proportional to 716,703.28, 989,050.68 and 394,413.38
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Solution
The fourth proportional to 716,703.28, 989,050.68 and 394,413.38 is: 544,290.55
Step by Step Solution
- Step 1: Write the proportion equation
716,703.28 : 989,050.68 = 394,413.38 : x - Step 2: Convert to fraction form
716,703.28/989,050.68 = 394,413.38/x - Step 3: Cross multiply
716,703.28x = 989,050.68 × 394,413.38 - Step 4: Simplify right side
716,703.28x = 390,094,821,690.10 - Step 5: Solve for x
x = 390,094,821,690.10/716,703.28 - Step 6: Final answer
x = 544,290.55
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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.