Home / 490,550.42-677,144.58-286,667.76

Finding the Fourth Proportional to 490,550.42, 677,144.58 and 286,667.76

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Solution

The fourth proportional to 490,550.42, 677,144.58 and 286,667.76 is: 395,709.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,550.42 : 677,144.58 = 286,667.76 : x
  2. Step 2: Convert to fraction form
    490,550.42/677,144.58 = 286,667.76/x
  3. Step 3: Cross multiply
    490,550.42x = 677,144.58 × 286,667.76
  4. Step 4: Simplify right side
    490,550.42x = 194,115,519,944.74
  5. Step 5: Solve for x
    x = 194,115,519,944.74/490,550.42
  6. Step 6: Final answer
    x = 395,709.62

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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.