Finding the Fourth Proportional to 647,793.81, 893,914.92 and 357,408.81
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Solution
The fourth proportional to 647,793.81, 893,914.92 and 357,408.81 is: 493,201.79
Step by Step Solution
- Step 1: Write the proportion equation
647,793.81 : 893,914.92 = 357,408.81 : x - Step 2: Convert to fraction form
647,793.81/893,914.92 = 357,408.81/x - Step 3: Cross multiply
647,793.81x = 893,914.92 × 357,408.81 - Step 4: Simplify right side
647,793.81x = 319,493,067,798.45 - Step 5: Solve for x
x = 319,493,067,798.45/647,793.81 - Step 6: Final answer
x = 493,201.79
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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.