Finding the Fourth Proportional to 919,857.75, 1,269,423.14 and 517,449.75
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Solution
The fourth proportional to 919,857.75, 1,269,423.14 and 517,449.75 is: 714,091.59
Step by Step Solution
- Step 1: Write the proportion equation
919,857.75 : 1,269,423.14 = 517,449.75 : x - Step 2: Convert to fraction form
919,857.75/1,269,423.14 = 517,449.75/x - Step 3: Cross multiply
919,857.75x = 1,269,423.14 × 517,449.75 - Step 4: Simplify right side
919,857.75x = 656,862,683,849.97 - Step 5: Solve for x
x = 656,862,683,849.97/919,857.75 - Step 6: Final answer
x = 714,091.59
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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.