Finding the Fourth Proportional to 816,930.18, 1,127,357.36 and 449,399.40
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Solution
The fourth proportional to 816,930.18, 1,127,357.36 and 449,399.40 is: 620,167.71
Step by Step Solution
- Step 1: Write the proportion equation
816,930.18 : 1,127,357.36 = 449,399.40 : x - Step 2: Convert to fraction form
816,930.18/1,127,357.36 = 449,399.40/x - Step 3: Cross multiply
816,930.18x = 1,127,357.36 × 449,399.40 - Step 4: Simplify right side
816,930.18x = 506,633,721,169.58 - Step 5: Solve for x
x = 506,633,721,169.58/816,930.18 - Step 6: Final answer
x = 620,167.71
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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.