Finding the Fourth Proportional to 721,961.80, 996,412.35 and 415,979.07
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Solution
The fourth proportional to 721,961.80, 996,412.35 and 415,979.07 is: 574,111.65
Step by Step Solution
- Step 1: Write the proportion equation
721,961.80 : 996,412.35 = 415,979.07 : x - Step 2: Convert to fraction form
721,961.80/996,412.35 = 415,979.07/x - Step 3: Cross multiply
721,961.80x = 996,412.35 × 415,979.07 - Step 4: Simplify right side
721,961.80x = 414,486,682,689.52 - Step 5: Solve for x
x = 414,486,682,689.52/721,961.80 - Step 6: Final answer
x = 574,111.65
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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.