Home / 326,919.68-490,723.20-289,718.40

Finding the Fourth Proportional to 326,919.68, 490,723.20 and 289,718.40

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Solution

The fourth proportional to 326,919.68, 490,723.20 and 289,718.40 is: 434,882.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,919.68 : 490,723.20 = 289,718.40 : x
  2. Step 2: Convert to fraction form
    326,919.68/490,723.20 = 289,718.40/x
  3. Step 3: Cross multiply
    326,919.68x = 490,723.20 × 289,718.40
  4. Step 4: Simplify right side
    326,919.68x = 142,171,540,346.88
  5. Step 5: Solve for x
    x = 142,171,540,346.88/326,919.68
  6. Step 6: Final answer
    x = 434,882.17

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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.