Finding the Fourth Proportional to 1,291,750.92, 1,782,615.96 and 718,828.20
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Solution
The fourth proportional to 1,291,750.92, 1,782,615.96 and 718,828.20 is: 991,982.74
Step by Step Solution
- Step 1: Write the proportion equation
1,291,750.92 : 1,782,615.96 = 718,828.20 : x - Step 2: Convert to fraction form
1,291,750.92/1,782,615.96 = 718,828.20/x - Step 3: Cross multiply
1,291,750.92x = 1,782,615.96 × 718,828.20 - Step 4: Simplify right side
1,291,750.92x = 1,281,394,621,818.07 - Step 5: Solve for x
x = 1,281,394,621,818.07/1,291,750.92 - Step 6: Final answer
x = 991,982.74
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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.