Finding the Fourth Proportional to 391,317.73, 539,738.99 and 359,156.68
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Solution
The fourth proportional to 391,317.73, 539,738.99 and 359,156.68 is: 495,379.71
Step by Step Solution
- Step 1: Write the proportion equation
391,317.73 : 539,738.99 = 359,156.68 : x - Step 2: Convert to fraction form
391,317.73/539,738.99 = 359,156.68/x - Step 3: Cross multiply
391,317.73x = 539,738.99 × 359,156.68 - Step 4: Simplify right side
391,317.73x = 193,850,861,919.17 - Step 5: Solve for x
x = 193,850,861,919.17/391,317.73 - Step 6: Final answer
x = 495,379.71
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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.