Finding the Fourth Proportional to 667,685.49, 921,444.91 and 377,289.66
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Solution
The fourth proportional to 667,685.49, 921,444.91 and 377,289.66 is: 520,681.72
Step by Step Solution
- Step 1: Write the proportion equation
667,685.49 : 921,444.91 = 377,289.66 : x - Step 2: Convert to fraction form
667,685.49/921,444.91 = 377,289.66/x - Step 3: Cross multiply
667,685.49x = 921,444.91 × 377,289.66 - Step 4: Simplify right side
667,685.49x = 347,651,632,403.99 - Step 5: Solve for x
x = 347,651,632,403.99/667,685.49 - Step 6: Final answer
x = 520,681.72
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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.