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Finding the Fourth Proportional to 486,082.40, 729,123.60 and 336,491.60

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Solution

The fourth proportional to 486,082.40, 729,123.60 and 336,491.60 is: 504,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,082.40 : 729,123.60 = 336,491.60 : x
  2. Step 2: Convert to fraction form
    486,082.40/729,123.60 = 336,491.60/x
  3. Step 3: Cross multiply
    486,082.40x = 729,123.60 × 336,491.60
  4. Step 4: Simplify right side
    486,082.40x = 245,343,966,761.76
  5. Step 5: Solve for x
    x = 245,343,966,761.76/486,082.40
  6. Step 6: Final answer
    x = 504,737.40

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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.