Finding the Fourth Proportional to 493,393.62, 680,878.35 and 278,529.06
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Solution
The fourth proportional to 493,393.62, 680,878.35 and 278,529.06 is: 384,367.37
Step by Step Solution
- Step 1: Write the proportion equation
493,393.62 : 680,878.35 = 278,529.06 : x - Step 2: Convert to fraction form
493,393.62/680,878.35 = 278,529.06/x - Step 3: Cross multiply
493,393.62x = 680,878.35 × 278,529.06 - Step 4: Simplify right side
493,393.62x = 189,644,406,799.85 - Step 5: Solve for x
x = 189,644,406,799.85/493,393.62 - Step 6: Final answer
x = 384,367.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.