Finding the Fourth Proportional to 721,779.14, 996,043.14 and 399,482.37
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Solution
The fourth proportional to 721,779.14, 996,043.14 and 399,482.37 is: 551,278.99
Step by Step Solution
- Step 1: Write the proportion equation
721,779.14 : 996,043.14 = 399,482.37 : x - Step 2: Convert to fraction form
721,779.14/996,043.14 = 399,482.37/x - Step 3: Cross multiply
721,779.14x = 996,043.14 × 399,482.37 - Step 4: Simplify right side
721,779.14x = 397,901,674,189.44 - Step 5: Solve for x
x = 397,901,674,189.44/721,779.14 - Step 6: Final answer
x = 551,278.99
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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.