Finding the Fourth Proportional to 811,971.88, 1,120,625.88 and 489,855.94
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Solution
The fourth proportional to 811,971.88, 1,120,625.88 and 489,855.94 is: 676,064.35
Step by Step Solution
- Step 1: Write the proportion equation
811,971.88 : 1,120,625.88 = 489,855.94 : x - Step 2: Convert to fraction form
811,971.88/1,120,625.88 = 489,855.94/x - Step 3: Cross multiply
811,971.88x = 1,120,625.88 × 489,855.94 - Step 4: Simplify right side
811,971.88x = 548,945,243,835.73 - Step 5: Solve for x
x = 548,945,243,835.73/811,971.88 - Step 6: Final answer
x = 676,064.35
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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.