Finding the Fourth Proportional to 1,392,276.64, 2,088,416.79 and 381,407.59
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Solution
The fourth proportional to 1,392,276.64, 2,088,416.79 and 381,407.59 is: 572,111.89
Step by Step Solution
- Step 1: Write the proportion equation
1,392,276.64 : 2,088,416.79 = 381,407.59 : x - Step 2: Convert to fraction form
1,392,276.64/2,088,416.79 = 381,407.59/x - Step 3: Cross multiply
1,392,276.64x = 2,088,416.79 × 381,407.59 - Step 4: Simplify right side
1,392,276.64x = 796,538,014,789.44 - Step 5: Solve for x
x = 796,538,014,789.44/1,392,276.64 - Step 6: Final answer
x = 572,111.89
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1.5x scale
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.