Finding the Fourth Proportional to 683,936.99, 943,881.92 and 378,006.79
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Solution
The fourth proportional to 683,936.99, 943,881.92 and 378,006.79 is: 521,676.38
Step by Step Solution
- Step 1: Write the proportion equation
683,936.99 : 943,881.92 = 378,006.79 : x - Step 2: Convert to fraction form
683,936.99/943,881.92 = 378,006.79/x - Step 3: Cross multiply
683,936.99x = 943,881.92 × 378,006.79 - Step 4: Simplify right side
683,936.99x = 356,793,772,828.20 - Step 5: Solve for x
x = 356,793,772,828.20/683,936.99 - Step 6: Final answer
x = 521,676.38
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1.5x scale
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.