Finding the Fourth Proportional to 678,497.48, 936,342.79 and 368,413.13
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Solution
The fourth proportional to 678,497.48, 936,342.79 and 368,413.13 is: 508,418.95
Step by Step Solution
- Step 1: Write the proportion equation
678,497.48 : 936,342.79 = 368,413.13 : x - Step 2: Convert to fraction form
678,497.48/936,342.79 = 368,413.13/x - Step 3: Cross multiply
678,497.48x = 936,342.79 × 368,413.13 - Step 4: Simplify right side
678,497.48x = 344,960,978,652.86 - Step 5: Solve for x
x = 344,960,978,652.86/678,497.48 - Step 6: Final answer
x = 508,418.95
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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.