Finding the Fourth Proportional to 709,413.18, 979,010.99 and 387,144.08
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Solution
The fourth proportional to 709,413.18, 979,010.99 and 387,144.08 is: 534,270.18
Step by Step Solution
- Step 1: Write the proportion equation
709,413.18 : 979,010.99 = 387,144.08 : x - Step 2: Convert to fraction form
709,413.18/979,010.99 = 387,144.08/x - Step 3: Cross multiply
709,413.18x = 979,010.99 × 387,144.08 - Step 4: Simplify right side
709,413.18x = 379,018,309,033.44 - Step 5: Solve for x
x = 379,018,309,033.44/709,413.18 - Step 6: Final answer
x = 534,270.18
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1.5x scale
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.