Finding the Fourth Proportional to 521,890.87, 781,507.36 and 343,858.14
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Solution
The fourth proportional to 521,890.87, 781,507.36 and 343,858.14 is: 514,911.60
Step by Step Solution
- Step 1: Write the proportion equation
521,890.87 : 781,507.36 = 343,858.14 : x - Step 2: Convert to fraction form
521,890.87/781,507.36 = 343,858.14/x - Step 3: Cross multiply
521,890.87x = 781,507.36 × 343,858.14 - Step 4: Simplify right side
521,890.87x = 268,727,666,404.85 - Step 5: Solve for x
x = 268,727,666,404.85/521,890.87 - Step 6: Final answer
x = 514,911.60
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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.