Finding the Fourth Proportional to 2,128,413.12, 3,189,847.31 and 864,763.44
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Solution
The fourth proportional to 2,128,413.12, 3,189,847.31 and 864,763.44 is: 1,296,018.76
Step by Step Solution
- Step 1: Write the proportion equation
2,128,413.12 : 3,189,847.31 = 864,763.44 : x - Step 2: Convert to fraction form
2,128,413.12/3,189,847.31 = 864,763.44/x - Step 3: Cross multiply
2,128,413.12x = 3,189,847.31 × 864,763.44 - Step 4: Simplify right side
2,128,413.12x = 2,758,463,332,870.35 - Step 5: Solve for x
x = 2,758,463,332,870.35/2,128,413.12 - Step 6: Final answer
x = 1,296,018.76
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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.