Finding the Fourth Proportional to 459,728.84, 634,278.12 and 278,382.80
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Solution
The fourth proportional to 459,728.84, 634,278.12 and 278,382.80 is: 384,078.84
Step by Step Solution
- Step 1: Write the proportion equation
459,728.84 : 634,278.12 = 278,382.80 : x - Step 2: Convert to fraction form
459,728.84/634,278.12 = 278,382.80/x - Step 3: Cross multiply
459,728.84x = 634,278.12 × 278,382.80 - Step 4: Simplify right side
459,728.84x = 176,572,119,024.34 - Step 5: Solve for x
x = 176,572,119,024.34/459,728.84 - Step 6: Final answer
x = 384,078.84
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1.5x scale
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.