Finding the Fourth Proportional to 686,029.85, 946,419.63 and 413,945.99
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Solution
The fourth proportional to 686,029.85, 946,419.63 and 413,945.99 is: 571,063.51
Step by Step Solution
- Step 1: Write the proportion equation
686,029.85 : 946,419.63 = 413,945.99 : x - Step 2: Convert to fraction form
686,029.85/946,419.63 = 413,945.99/x - Step 3: Cross multiply
686,029.85x = 946,419.63 × 413,945.99 - Step 4: Simplify right side
686,029.85x = 391,766,610,695.78 - Step 5: Solve for x
x = 391,766,610,695.78/686,029.85 - Step 6: Final answer
x = 571,063.51
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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.