Finding the Fourth Proportional to 691,405.20, 1,037,253.60 and 291,840.30
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Solution
The fourth proportional to 691,405.20, 1,037,253.60 and 291,840.30 is: 437,821.99
Step by Step Solution
- Step 1: Write the proportion equation
691,405.20 : 1,037,253.60 = 291,840.30 : x - Step 2: Convert to fraction form
691,405.20/1,037,253.60 = 291,840.30/x - Step 3: Cross multiply
691,405.20x = 1,037,253.60 × 291,840.30 - Step 4: Simplify right side
691,405.20x = 302,712,401,800.08 - Step 5: Solve for x
x = 302,712,401,800.08/691,405.20 - Step 6: Final answer
x = 437,821.99
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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.