Finding the Fourth Proportional to 990,961.79, 1,485,917.80 and 391,898.75
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Solution
The fourth proportional to 990,961.79, 1,485,917.80 and 391,898.75 is: 587,640.54
Step by Step Solution
- Step 1: Write the proportion equation
990,961.79 : 1,485,917.80 = 391,898.75 : x - Step 2: Convert to fraction form
990,961.79/1,485,917.80 = 391,898.75/x - Step 3: Cross multiply
990,961.79x = 1,485,917.80 × 391,898.75 - Step 4: Simplify right side
990,961.79x = 582,329,320,013.41 - Step 5: Solve for x
x = 582,329,320,013.41/990,961.79 - Step 6: Final answer
x = 587,640.54
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.