Finding the Fourth Proportional to 644,398.92, 889,245.76 and 357,937.28
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Solution
The fourth proportional to 644,398.92, 889,245.76 and 357,937.28 is: 493,939.70
Step by Step Solution
- Step 1: Write the proportion equation
644,398.92 : 889,245.76 = 357,937.28 : x - Step 2: Convert to fraction form
644,398.92/889,245.76 = 357,937.28/x - Step 3: Cross multiply
644,398.92x = 889,245.76 × 357,937.28 - Step 4: Simplify right side
644,398.92x = 318,294,208,585.93 - Step 5: Solve for x
x = 318,294,208,585.93/644,398.92 - Step 6: Final answer
x = 493,939.70
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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.