Finding the Fourth Proportional to 579,413.20, 869,119.80 and 486,101.20
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Solution
The fourth proportional to 579,413.20, 869,119.80 and 486,101.20 is: 729,151.80
Step by Step Solution
- Step 1: Write the proportion equation
579,413.20 : 869,119.80 = 486,101.20 : x - Step 2: Convert to fraction form
579,413.20/869,119.80 = 486,101.20/x - Step 3: Cross multiply
579,413.20x = 869,119.80 × 486,101.20 - Step 4: Simplify right side
579,413.20x = 422,480,177,723.76 - Step 5: Solve for x
x = 422,480,177,723.76/579,413.20 - Step 6: Final answer
x = 729,151.80
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1.5x scale
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.