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Finding the Fourth Proportional to 486,082.40, 729,123.60 and 384,605.60

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Solution

The fourth proportional to 486,082.40, 729,123.60 and 384,605.60 is: 576,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,082.40 : 729,123.60 = 384,605.60 : x
  2. Step 2: Convert to fraction form
    486,082.40/729,123.60 = 384,605.60/x
  3. Step 3: Cross multiply
    486,082.40x = 729,123.60 × 384,605.60
  4. Step 4: Simplify right side
    486,082.40x = 280,425,019,652.16
  5. Step 5: Solve for x
    x = 280,425,019,652.16/486,082.40
  6. Step 6: Final answer
    x = 576,908.40

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Similar ratio
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1.5x scale

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.