Finding the Fourth Proportional to 939,989.99, 1,297,193.80 and 520,892.78
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Solution
The fourth proportional to 939,989.99, 1,297,193.80 and 520,892.78 is: 718,836.25
Step by Step Solution
- Step 1: Write the proportion equation
939,989.99 : 1,297,193.80 = 520,892.78 : x - Step 2: Convert to fraction form
939,989.99/1,297,193.80 = 520,892.78/x - Step 3: Cross multiply
939,989.99x = 1,297,193.80 × 520,892.78 - Step 4: Simplify right side
939,989.99x = 675,698,876,892.56 - Step 5: Solve for x
x = 675,698,876,892.56/939,989.99 - Step 6: Final answer
x = 718,836.25
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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.