Home / 520,794.24-781,054.66-221,120.56

Finding the Fourth Proportional to 520,794.24, 781,054.66 and 221,120.56

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Solution

The fourth proportional to 520,794.24, 781,054.66 and 221,120.56 is: 331,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,794.24 : 781,054.66 = 221,120.56 : x
  2. Step 2: Convert to fraction form
    520,794.24/781,054.66 = 221,120.56/x
  3. Step 3: Cross multiply
    520,794.24x = 781,054.66 × 221,120.56
  4. Step 4: Simplify right side
    520,794.24x = 172,707,243,809.81
  5. Step 5: Solve for x
    x = 172,707,243,809.81/520,794.24
  6. Step 6: Final answer
    x = 331,622.80

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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.