Finding the Fourth Proportional to 720,830.13, 1,081,400.34 and 215,432.19
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Solution
The fourth proportional to 720,830.13, 1,081,400.34 and 215,432.19 is: 323,194.65
Step by Step Solution
- Step 1: Write the proportion equation
720,830.13 : 1,081,400.34 = 215,432.19 : x - Step 2: Convert to fraction form
720,830.13/1,081,400.34 = 215,432.19/x - Step 3: Cross multiply
720,830.13x = 1,081,400.34 × 215,432.19 - Step 4: Simplify right side
720,830.13x = 232,968,443,512.95 - Step 5: Solve for x
x = 232,968,443,512.95/720,830.13 - Step 6: Final answer
x = 323,194.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.