Finding the Fourth Proportional to 391,026.59, 539,338.42 and 358,865.08
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Solution
The fourth proportional to 391,026.59, 539,338.42 and 358,865.08 is: 494,978.43
Step by Step Solution
- Step 1: Write the proportion equation
391,026.59 : 539,338.42 = 358,865.08 : x - Step 2: Convert to fraction form
391,026.59/539,338.42 = 358,865.08/x - Step 3: Cross multiply
391,026.59x = 539,338.42 × 358,865.08 - Step 4: Simplify right side
391,026.59x = 193,549,728,383.70 - Step 5: Solve for x
x = 193,549,728,383.70/391,026.59 - Step 6: Final answer
x = 494,978.43
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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.