Finding the Fourth Proportional to 679,430.40, 937,704.90 and 438,413.68
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Solution
The fourth proportional to 679,430.40, 937,704.90 and 438,413.68 is: 605,069.56
Step by Step Solution
- Step 1: Write the proportion equation
679,430.40 : 937,704.90 = 438,413.68 : x - Step 2: Convert to fraction form
679,430.40/937,704.90 = 438,413.68/x - Step 3: Cross multiply
679,430.40x = 937,704.90 × 438,413.68 - Step 4: Simplify right side
679,430.40x = 411,102,655,963.03 - Step 5: Solve for x
x = 411,102,655,963.03/679,430.40 - Step 6: Final answer
x = 605,069.56
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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.