Finding the Fourth Proportional to 651,721.77, 899,207.18 and 393,394.54
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Solution
The fourth proportional to 651,721.77, 899,207.18 and 393,394.54 is: 542,782.54
Step by Step Solution
- Step 1: Write the proportion equation
651,721.77 : 899,207.18 = 393,394.54 : x - Step 2: Convert to fraction form
651,721.77/899,207.18 = 393,394.54/x - Step 3: Cross multiply
651,721.77x = 899,207.18 × 393,394.54 - Step 4: Simplify right side
651,721.77x = 353,743,192,973.83 - Step 5: Solve for x
x = 353,743,192,973.83/651,721.77 - Step 6: Final answer
x = 542,782.54
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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.