Finding the Fourth Proportional to 817,672.98, 1,128,413.80 and 455,116.98
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Solution
The fourth proportional to 817,672.98, 1,128,413.80 and 455,116.98 is: 628,075.40
Step by Step Solution
- Step 1: Write the proportion equation
817,672.98 : 1,128,413.80 = 455,116.98 : x - Step 2: Convert to fraction form
817,672.98/1,128,413.80 = 455,116.98/x - Step 3: Cross multiply
817,672.98x = 1,128,413.80 × 455,116.98 - Step 4: Simplify right side
817,672.98x = 513,560,280,846.32 - Step 5: Solve for x
x = 513,560,280,846.32/817,672.98 - Step 6: Final answer
x = 628,075.40
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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.