Finding the Fourth Proportional to 420,854.05, 580,027.71 and 318,634.66
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Solution
The fourth proportional to 420,854.05, 580,027.71 and 318,634.66 is: 439,147.33
Step by Step Solution
- Step 1: Write the proportion equation
420,854.05 : 580,027.71 = 318,634.66 : x - Step 2: Convert to fraction form
420,854.05/580,027.71 = 318,634.66/x - Step 3: Cross multiply
420,854.05x = 580,027.71 × 318,634.66 - Step 4: Simplify right side
420,854.05x = 184,816,933,190.18 - Step 5: Solve for x
x = 184,816,933,190.18/420,854.05 - Step 6: Final answer
x = 439,147.33
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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.