Home / 817,635.34-1,226,359.57-218,643.20

Finding the Fourth Proportional to 817,635.34, 1,226,359.57 and 218,643.20

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Solution

The fourth proportional to 817,635.34, 1,226,359.57 and 218,643.20 is: 327,939.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,635.34 : 1,226,359.57 = 218,643.20 : x
  2. Step 2: Convert to fraction form
    817,635.34/1,226,359.57 = 218,643.20/x
  3. Step 3: Cross multiply
    817,635.34x = 1,226,359.57 × 218,643.20
  4. Step 4: Simplify right side
    817,635.34x = 268,135,180,735.42
  5. Step 5: Solve for x
    x = 268,135,180,735.42/817,635.34
  6. Step 6: Final answer
    x = 327,939.81

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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.