Finding the Fourth Proportional to 1,296,581.91, 1,787,619.68 and 1,063,148.79
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Solution
The fourth proportional to 1,296,581.91, 1,787,619.68 and 1,063,148.79 is: 1,465,781.44
Step by Step Solution
- Step 1: Write the proportion equation
1,296,581.91 : 1,787,619.68 = 1,063,148.79 : x - Step 2: Convert to fraction form
1,296,581.91/1,787,619.68 = 1,063,148.79/x - Step 3: Cross multiply
1,296,581.91x = 1,787,619.68 × 1,063,148.79 - Step 4: Simplify right side
1,296,581.91x = 1,900,505,699,772.19 - Step 5: Solve for x
x = 1,900,505,699,772.19/1,296,581.91 - Step 6: Final answer
x = 1,465,781.44
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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.