Finding the Fourth Proportional to 457,720.68, 686,082.36 and 390,958.32
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Solution
The fourth proportional to 457,720.68, 686,082.36 and 390,958.32 is: 586,011.55
Step by Step Solution
- Step 1: Write the proportion equation
457,720.68 : 686,082.36 = 390,958.32 : x - Step 2: Convert to fraction form
457,720.68/686,082.36 = 390,958.32/x - Step 3: Cross multiply
457,720.68x = 686,082.36 × 390,958.32 - Step 4: Simplify right side
457,720.68x = 268,229,606,847.24 - Step 5: Solve for x
x = 268,229,606,847.24/457,720.68 - Step 6: Final answer
x = 586,011.55
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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.