Finding the Fourth Proportional to 642,124,782.88, 886,117,129.00 and 377,823,894.65
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Solution
The fourth proportional to 642,124,782.88, 886,117,129.00 and 377,823,894.65 is: 521,388,106.68
Step by Step Solution
- Step 1: Write the proportion equation
642,124,782.88 : 886,117,129.00 = 377,823,894.65 : x - Step 2: Convert to fraction form
642,124,782.88/886,117,129.00 = 377,823,894.65/x - Step 3: Cross multiply
642,124,782.88x = 886,117,129.00 × 377,823,894.65 - Step 4: Simplify right side
642,124,782.88x = 334,796,224,797,957,888 - Step 5: Solve for x
x = 334,796,224,797,957,888/642,124,782.88 - Step 6: Final answer
x = 521,388,106.68
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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.