Finding the Fourth Proportional to 811,690.96, 1,120,584 and 489,482.68
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Solution
The fourth proportional to 811,690.96, 1,120,584 and 489,482.68 is: 675,757.75
Step by Step Solution
- Step 1: Write the proportion equation
811,690.96 : 1,120,584 = 489,482.68 : x - Step 2: Convert to fraction form
811,690.96/1,120,584 = 489,482.68/x - Step 3: Cross multiply
811,690.96x = 1,120,584 × 489,482.68 - Step 4: Simplify right side
811,690.96x = 548,506,459,485.12 - Step 5: Solve for x
x = 548,506,459,485.12/811,690.96 - Step 6: Final answer
x = 675,757.75
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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.