Finding the Fourth Proportional to 1,247,739.30, 1,721,885.42 and 674,779.47
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Solution
The fourth proportional to 1,247,739.30, 1,721,885.42 and 674,779.47 is: 931,198.47
Step by Step Solution
- Step 1: Write the proportion equation
1,247,739.30 : 1,721,885.42 = 674,779.47 : x - Step 2: Convert to fraction form
1,247,739.30/1,721,885.42 = 674,779.47/x - Step 3: Cross multiply
1,247,739.30x = 1,721,885.42 × 674,779.47 - Step 4: Simplify right side
1,247,739.30x = 1,161,892,919,125.00 - Step 5: Solve for x
x = 1,161,892,919,125.00/1,247,739.30 - Step 6: Final answer
x = 931,198.47
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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.