Finding the Fourth Proportional to 643,806,174.24, 888,568,467.84 and 379,472,737.44
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Solution
The fourth proportional to 643,806,174.24, 888,568,467.84 and 379,472,737.44 is: 523,740,719.47
Step by Step Solution
- Step 1: Write the proportion equation
643,806,174.24 : 888,568,467.84 = 379,472,737.44 : x - Step 2: Convert to fraction form
643,806,174.24/888,568,467.84 = 379,472,737.44/x - Step 3: Cross multiply
643,806,174.24x = 888,568,467.84 × 379,472,737.44 - Step 4: Simplify right side
643,806,174.24x = 337,187,508,894,111,424 - Step 5: Solve for x
x = 337,187,508,894,111,424/643,806,174.24 - Step 6: Final answer
x = 523,740,719.47
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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.