Finding the Fourth Proportional to 1,278,027.60, 1,917,313.56 and 379,471.92
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Solution
The fourth proportional to 1,278,027.60, 1,917,313.56 and 379,471.92 is: 569,288.69
Step by Step Solution
- Step 1: Write the proportion equation
1,278,027.60 : 1,917,313.56 = 379,471.92 : x - Step 2: Convert to fraction form
1,278,027.60/1,917,313.56 = 379,471.92/x - Step 3: Cross multiply
1,278,027.60x = 1,917,313.56 × 379,471.92 - Step 4: Simplify right side
1,278,027.60x = 727,566,657,855.24 - Step 5: Solve for x
x = 727,566,657,855.24/1,278,027.60 - Step 6: Final answer
x = 569,288.69
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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.