Finding the Fourth Proportional to 826,521.80, 1,239,782.70 and 686,553.80
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Solution
The fourth proportional to 826,521.80, 1,239,782.70 and 686,553.80 is: 1,029,830.70
Step by Step Solution
- Step 1: Write the proportion equation
826,521.80 : 1,239,782.70 = 686,553.80 : x - Step 2: Convert to fraction form
826,521.80/1,239,782.70 = 686,553.80/x - Step 3: Cross multiply
826,521.80x = 1,239,782.70 × 686,553.80 - Step 4: Simplify right side
826,521.80x = 851,177,523,859.26 - Step 5: Solve for x
x = 851,177,523,859.26/826,521.80 - Step 6: Final answer
x = 1,029,830.70
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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.