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Finding the Fourth Proportional to 499,638.36, 689,506.38 and 273,279

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Solution

The fourth proportional to 499,638.36, 689,506.38 and 273,279 is: 377,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,638.36 : 689,506.38 = 273,279 : x
  2. Step 2: Convert to fraction form
    499,638.36/689,506.38 = 273,279/x
  3. Step 3: Cross multiply
    499,638.36x = 689,506.38 × 273,279
  4. Step 4: Simplify right side
    499,638.36x = 188,427,614,020.02
  5. Step 5: Solve for x
    x = 188,427,614,020.02/499,638.36
  6. Step 6: Final answer
    x = 377,128.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.