Finding the Fourth Proportional to 643,239.38, 964,859.07 and 440,635.70
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Solution
The fourth proportional to 643,239.38, 964,859.07 and 440,635.70 is: 660,953.55
Step by Step Solution
- Step 1: Write the proportion equation
643,239.38 : 964,859.07 = 440,635.70 : x - Step 2: Convert to fraction form
643,239.38/964,859.07 = 440,635.70/x - Step 3: Cross multiply
643,239.38x = 964,859.07 × 440,635.70 - Step 4: Simplify right side
643,239.38x = 425,151,346,886.50 - Step 5: Solve for x
x = 425,151,346,886.50/643,239.38 - Step 6: Final answer
x = 660,953.55
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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.