Finding the Fourth Proportional to 500,407.59, 690,611.78 and 285,579.99
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Solution
The fourth proportional to 500,407.59, 690,611.78 and 285,579.99 is: 394,128.52
Step by Step Solution
- Step 1: Write the proportion equation
500,407.59 : 690,611.78 = 285,579.99 : x - Step 2: Convert to fraction form
500,407.59/690,611.78 = 285,579.99/x - Step 3: Cross multiply
500,407.59x = 690,611.78 × 285,579.99 - Step 4: Simplify right side
500,407.59x = 197,224,903,798.38 - Step 5: Solve for x
x = 197,224,903,798.38/500,407.59 - Step 6: Final answer
x = 394,128.52
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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.