Finding the Fourth Proportional to 665,540.24, 918,633.93 and 393,702.64
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Solution
The fourth proportional to 665,540.24, 918,633.93 and 393,702.64 is: 543,421.09
Step by Step Solution
- Step 1: Write the proportion equation
665,540.24 : 918,633.93 = 393,702.64 : x - Step 2: Convert to fraction form
665,540.24/918,633.93 = 393,702.64/x - Step 3: Cross multiply
665,540.24x = 918,633.93 × 393,702.64 - Step 4: Simplify right side
665,540.24x = 361,668,603,434.58 - Step 5: Solve for x
x = 361,668,603,434.58/665,540.24 - Step 6: Final answer
x = 543,421.09
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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.