Finding the Fourth Proportional to 823,389.20, 1,235,861.40 and 508,461.20
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Solution
The fourth proportional to 823,389.20, 1,235,861.40 and 508,461.20 is: 763,171.99
Step by Step Solution
- Step 1: Write the proportion equation
823,389.20 : 1,235,861.40 = 508,461.20 : x - Step 2: Convert to fraction form
823,389.20/1,235,861.40 = 508,461.20/x - Step 3: Cross multiply
823,389.20x = 1,235,861.40 × 508,461.20 - Step 4: Simplify right side
823,389.20x = 628,387,570,477.68 - Step 5: Solve for x
x = 628,387,570,477.68/823,389.20 - Step 6: Final answer
x = 763,171.99
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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.