Finding the Fourth Proportional to 691,439.92, 1,037,644.68 and 286,638.37
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Solution
The fourth proportional to 691,439.92, 1,037,644.68 and 286,638.37 is: 430,158.53
Step by Step Solution
- Step 1: Write the proportion equation
691,439.92 : 1,037,644.68 = 286,638.37 : x - Step 2: Convert to fraction form
691,439.92/1,037,644.68 = 286,638.37/x - Step 3: Cross multiply
691,439.92x = 1,037,644.68 × 286,638.37 - Step 4: Simplify right side
691,439.92x = 297,428,779,714.37 - Step 5: Solve for x
x = 297,428,779,714.37/691,439.92 - Step 6: Final answer
x = 430,158.53
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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.