Finding the Fourth Proportional to 863,779.23, 1,293,934.16 and 430,190.53
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Solution
The fourth proportional to 863,779.23, 1,293,934.16 and 430,190.53 is: 644,421.87
Step by Step Solution
- Step 1: Write the proportion equation
863,779.23 : 1,293,934.16 = 430,190.53 : x - Step 2: Convert to fraction form
863,779.23/1,293,934.16 = 430,190.53/x - Step 3: Cross multiply
863,779.23x = 1,293,934.16 × 430,190.53 - Step 4: Simplify right side
863,779.23x = 556,638,219,924.55 - Step 5: Solve for x
x = 556,638,219,924.55/863,779.23 - Step 6: Final answer
x = 644,421.87
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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.