Finding the Fourth Proportional to 879,423.70, 1,319,135.55 and 214,575.70
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Solution
The fourth proportional to 879,423.70, 1,319,135.55 and 214,575.70 is: 321,863.55
Step by Step Solution
- Step 1: Write the proportion equation
879,423.70 : 1,319,135.55 = 214,575.70 : x - Step 2: Convert to fraction form
879,423.70/1,319,135.55 = 214,575.70/x - Step 3: Cross multiply
879,423.70x = 1,319,135.55 × 214,575.70 - Step 4: Simplify right side
879,423.70x = 283,054,434,036.14 - Step 5: Solve for x
x = 283,054,434,036.14/879,423.70 - Step 6: Final answer
x = 321,863.55
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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.