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Finding the Fourth Proportional to 505,380.56, 697,426.65 and 275,939.83

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Solution

The fourth proportional to 505,380.56, 697,426.65 and 275,939.83 is: 380,797.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,380.56 : 697,426.65 = 275,939.83 : x
  2. Step 2: Convert to fraction form
    505,380.56/697,426.65 = 275,939.83/x
  3. Step 3: Cross multiply
    505,380.56x = 697,426.65 × 275,939.83
  4. Step 4: Simplify right side
    505,380.56x = 192,447,787,751.34
  5. Step 5: Solve for x
    x = 192,447,787,751.34/505,380.56
  6. Step 6: Final answer
    x = 380,797.77

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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.