Finding the Fourth Proportional to 380,728.44, 570,690.78 and 127,769.08
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Solution
The fourth proportional to 380,728.44, 570,690.78 and 127,769.08 is: 191,518.75
Step by Step Solution
- Step 1: Write the proportion equation
380,728.44 : 570,690.78 = 127,769.08 : x - Step 2: Convert to fraction form
380,728.44/570,690.78 = 127,769.08/x - Step 3: Cross multiply
380,728.44x = 570,690.78 × 127,769.08 - Step 4: Simplify right side
380,728.44x = 72,916,635,925.08 - Step 5: Solve for x
x = 72,916,635,925.08/380,728.44 - Step 6: Final answer
x = 191,518.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.