Finding the Fourth Proportional to 686,391.41, 1,029,264.40 and 253,809.99
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Solution
The fourth proportional to 686,391.41, 1,029,264.40 and 253,809.99 is: 380,595.65
Step by Step Solution
- Step 1: Write the proportion equation
686,391.41 : 1,029,264.40 = 253,809.99 : x - Step 2: Convert to fraction form
686,391.41/1,029,264.40 = 253,809.99/x - Step 3: Cross multiply
686,391.41x = 1,029,264.40 × 253,809.99 - Step 4: Simplify right side
686,391.41x = 261,237,587,071.36 - Step 5: Solve for x
x = 261,237,587,071.36/686,391.41 - Step 6: Final answer
x = 380,595.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.