Finding the Fourth Proportional to 643,277.76, 887,142.12 and 401,582.68
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Solution
The fourth proportional to 643,277.76, 887,142.12 and 401,582.68 is: 553,821.28
Step by Step Solution
- Step 1: Write the proportion equation
643,277.76 : 887,142.12 = 401,582.68 : x - Step 2: Convert to fraction form
643,277.76/887,142.12 = 401,582.68/x - Step 3: Cross multiply
643,277.76x = 887,142.12 × 401,582.68 - Step 4: Simplify right side
643,277.76x = 356,260,910,090.48 - Step 5: Solve for x
x = 356,260,910,090.48/643,277.76 - Step 6: Final answer
x = 553,821.28
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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.