Finding the Fourth Proportional to 879,409.70, 1,319,114.55 and 214,561.70
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Solution
The fourth proportional to 879,409.70, 1,319,114.55 and 214,561.70 is: 321,842.55
Step by Step Solution
- Step 1: Write the proportion equation
879,409.70 : 1,319,114.55 = 214,561.70 : x - Step 2: Convert to fraction form
879,409.70/1,319,114.55 = 214,561.70/x - Step 3: Cross multiply
879,409.70x = 1,319,114.55 × 214,561.70 - Step 4: Simplify right side
879,409.70x = 283,031,460,342.74 - Step 5: Solve for x
x = 283,031,460,342.74/879,409.70 - Step 6: Final answer
x = 321,842.55
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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.