Finding the Fourth Proportional to 864,872.12, 1,296,872.64 and 288,291.26
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Solution
The fourth proportional to 864,872.12, 1,296,872.64 and 288,291.26 is: 432,291.71
Step by Step Solution
- Step 1: Write the proportion equation
864,872.12 : 1,296,872.64 = 288,291.26 : x - Step 2: Convert to fraction form
864,872.12/1,296,872.64 = 288,291.26/x - Step 3: Cross multiply
864,872.12x = 1,296,872.64 × 288,291.26 - Step 4: Simplify right side
864,872.12x = 373,877,047,445.13 - Step 5: Solve for x
x = 373,877,047,445.13/864,872.12 - Step 6: Final answer
x = 432,291.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.