Finding the Fourth Proportional to 721,817.26, 996,370.38 and 420,011.26
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Solution
The fourth proportional to 721,817.26, 996,370.38 and 420,011.26 is: 579,768.32
Step by Step Solution
- Step 1: Write the proportion equation
721,817.26 : 996,370.38 = 420,011.26 : x - Step 2: Convert to fraction form
721,817.26/996,370.38 = 420,011.26/x - Step 3: Cross multiply
721,817.26x = 996,370.38 × 420,011.26 - Step 4: Simplify right side
721,817.26x = 418,486,778,730.48 - Step 5: Solve for x
x = 418,486,778,730.48/721,817.26 - Step 6: Final answer
x = 579,768.32
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1.5x scale
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.