Finding the Fourth Proportional to 644,753.96, 889,719.78 and 358,256.96
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Solution
The fourth proportional to 644,753.96, 889,719.78 and 358,256.96 is: 494,371.99
Step by Step Solution
- Step 1: Write the proportion equation
644,753.96 : 889,719.78 = 358,256.96 : x - Step 2: Convert to fraction form
644,753.96/889,719.78 = 358,256.96/x - Step 3: Cross multiply
644,753.96x = 889,719.78 × 358,256.96 - Step 4: Simplify right side
644,753.96x = 318,748,297,394.79 - Step 5: Solve for x
x = 318,748,297,394.79/644,753.96 - Step 6: Final answer
x = 494,371.99
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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.