Finding the Fourth Proportional to 427,108.66, 588,682.14 and 390,909.62
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Solution
The fourth proportional to 427,108.66, 588,682.14 and 390,909.62 is: 538,789.15
Step by Step Solution
- Step 1: Write the proportion equation
427,108.66 : 588,682.14 = 390,909.62 : x - Step 2: Convert to fraction form
427,108.66/588,682.14 = 390,909.62/x - Step 3: Cross multiply
427,108.66x = 588,682.14 × 390,909.62 - Step 4: Simplify right side
427,108.66x = 230,121,511,648.19 - Step 5: Solve for x
x = 230,121,511,648.19/427,108.66 - Step 6: Final answer
x = 538,789.15
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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.