Finding the Fourth Proportional to 642,766.20, 887,026.17 and 352,405.09
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Solution
The fourth proportional to 642,766.20, 887,026.17 and 352,405.09 is: 486,323.86
Step by Step Solution
- Step 1: Write the proportion equation
642,766.20 : 887,026.17 = 352,405.09 : x - Step 2: Convert to fraction form
642,766.20/887,026.17 = 352,405.09/x - Step 3: Cross multiply
642,766.20x = 887,026.17 × 352,405.09 - Step 4: Simplify right side
642,766.20x = 312,592,537,271.21 - Step 5: Solve for x
x = 312,592,537,271.21/642,766.20 - Step 6: Final answer
x = 486,323.86
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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.