Finding the Fourth Proportional to 505,413.12, 697,474.56 and 279,075.84
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Solution
The fourth proportional to 505,413.12, 697,474.56 and 279,075.84 is: 385,127.12
Step by Step Solution
- Step 1: Write the proportion equation
505,413.12 : 697,474.56 = 279,075.84 : x - Step 2: Convert to fraction form
505,413.12/697,474.56 = 279,075.84/x - Step 3: Cross multiply
505,413.12x = 697,474.56 × 279,075.84 - Step 4: Simplify right side
505,413.12x = 194,648,298,710.63 - Step 5: Solve for x
x = 194,648,298,710.63/505,413.12 - Step 6: Final answer
x = 385,127.12
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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.