Finding the Fourth Proportional to 879,148.68, 1,318,921.92 and 280,143.96
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Solution
The fourth proportional to 879,148.68, 1,318,921.92 and 280,143.96 is: 420,279.32
Step by Step Solution
- Step 1: Write the proportion equation
879,148.68 : 1,318,921.92 = 280,143.96 : x - Step 2: Convert to fraction form
879,148.68/1,318,921.92 = 280,143.96/x - Step 3: Cross multiply
879,148.68x = 1,318,921.92 × 280,143.96 - Step 4: Simplify right side
879,148.68x = 369,488,009,599.60 - Step 5: Solve for x
x = 369,488,009,599.60/879,148.68 - Step 6: Final answer
x = 420,279.32
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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.