Finding the Fourth Proportional to 821,657.70, 1,232,486.55 and 289,779.30
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Solution
The fourth proportional to 821,657.70, 1,232,486.55 and 289,779.30 is: 434,668.95
Step by Step Solution
- Step 1: Write the proportion equation
821,657.70 : 1,232,486.55 = 289,779.30 : x - Step 2: Convert to fraction form
821,657.70/1,232,486.55 = 289,779.30/x - Step 3: Cross multiply
821,657.70x = 1,232,486.55 × 289,779.30 - Step 4: Simplify right side
821,657.70x = 357,149,089,718.42 - Step 5: Solve for x
x = 357,149,089,718.42/821,657.70 - Step 6: Final answer
x = 434,668.95
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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.