Finding the Fourth Proportional to 879,986.40, 1,319,104.80 and 405,844.80
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Solution
The fourth proportional to 879,986.40, 1,319,104.80 and 405,844.80 is: 608,363.75
Step by Step Solution
- Step 1: Write the proportion equation
879,986.40 : 1,319,104.80 = 405,844.80 : x - Step 2: Convert to fraction form
879,986.40/1,319,104.80 = 405,844.80/x - Step 3: Cross multiply
879,986.40x = 1,319,104.80 × 405,844.80 - Step 4: Simplify right side
879,986.40x = 535,351,823,735.04 - Step 5: Solve for x
x = 535,351,823,735.04/879,986.40 - Step 6: Final answer
x = 608,363.75
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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.