Finding the Fourth Proportional to 1,392,303.94, 2,088,457.74 and 381,434.78
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Solution
The fourth proportional to 1,392,303.94, 2,088,457.74 and 381,434.78 is: 572,152.67
Step by Step Solution
- Step 1: Write the proportion equation
1,392,303.94 : 2,088,457.74 = 381,434.78 : x - Step 2: Convert to fraction form
1,392,303.94/2,088,457.74 = 381,434.78/x - Step 3: Cross multiply
1,392,303.94x = 2,088,457.74 × 381,434.78 - Step 4: Simplify right side
1,392,303.94x = 796,610,418,596.20 - Step 5: Solve for x
x = 796,610,418,596.20/1,392,303.94 - Step 6: Final answer
x = 572,152.67
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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.