Finding the Fourth Proportional to 782,753.36, 1,080,393.24 and 443,421.68
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Solution
The fourth proportional to 782,753.36, 1,080,393.24 and 443,421.68 is: 612,031.59
Step by Step Solution
- Step 1: Write the proportion equation
782,753.36 : 1,080,393.24 = 443,421.68 : x - Step 2: Convert to fraction form
782,753.36/1,080,393.24 = 443,421.68/x - Step 3: Cross multiply
782,753.36x = 1,080,393.24 × 443,421.68 - Step 4: Simplify right side
782,753.36x = 479,069,785,541.44 - Step 5: Solve for x
x = 479,069,785,541.44/782,753.36 - Step 6: Final answer
x = 612,031.59
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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.