Finding the Fourth Proportional to 1,291,067.46, 1,781,668.35 and 718,107.68
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Solution
The fourth proportional to 1,291,067.46, 1,781,668.35 and 718,107.68 is: 990,985.95
Step by Step Solution
- Step 1: Write the proportion equation
1,291,067.46 : 1,781,668.35 = 718,107.68 : x - Step 2: Convert to fraction form
1,291,067.46/1,781,668.35 = 718,107.68/x - Step 3: Cross multiply
1,291,067.46x = 1,781,668.35 × 718,107.68 - Step 4: Simplify right side
1,291,067.46x = 1,279,429,716,439.59 - Step 5: Solve for x
x = 1,279,429,716,439.59/1,291,067.46 - Step 6: Final answer
x = 990,985.95
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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.