Finding the Fourth Proportional to 678,931.12, 936,954.62 and 377,125.12
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Solution
The fourth proportional to 678,931.12, 936,954.62 and 377,125.12 is: 520,449.15
Step by Step Solution
- Step 1: Write the proportion equation
678,931.12 : 936,954.62 = 377,125.12 : x - Step 2: Convert to fraction form
678,931.12/936,954.62 = 377,125.12/x - Step 3: Cross multiply
678,931.12x = 936,954.62 × 377,125.12 - Step 4: Simplify right side
678,931.12x = 353,349,123,502.05 - Step 5: Solve for x
x = 353,349,123,502.05/678,931.12 - Step 6: Final answer
x = 520,449.15
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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.