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Finding the Fourth Proportional to 520,399.24, 718,141.62 and 294,039.88

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Solution

The fourth proportional to 520,399.24, 718,141.62 and 294,039.88 is: 405,769.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,399.24 : 718,141.62 = 294,039.88 : x
  2. Step 2: Convert to fraction form
    520,399.24/718,141.62 = 294,039.88/x
  3. Step 3: Cross multiply
    520,399.24x = 718,141.62 × 294,039.88
  4. Step 4: Simplify right side
    520,399.24x = 211,162,275,767.81
  5. Step 5: Solve for x
    x = 211,162,275,767.81/520,399.24
  6. Step 6: Final answer
    x = 405,769.76

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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.