Finding the Fourth Proportional to 1,490,475.43, 2,056,863.87 and 811,416.79
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Solution
The fourth proportional to 1,490,475.43, 2,056,863.87 and 811,416.79 is: 1,119,759.40
Step by Step Solution
- Step 1: Write the proportion equation
1,490,475.43 : 2,056,863.87 = 811,416.79 : x - Step 2: Convert to fraction form
1,490,475.43/2,056,863.87 = 811,416.79/x - Step 3: Cross multiply
1,490,475.43x = 2,056,863.87 × 811,416.79 - Step 4: Simplify right side
1,490,475.43x = 1,668,973,864,520.97 - Step 5: Solve for x
x = 1,668,973,864,520.97/1,490,475.43 - Step 6: Final answer
x = 1,119,759.40
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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.