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Finding the Fourth Proportional to 672,491.52, 1,008,728.64 and 223,418.88

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Solution

The fourth proportional to 672,491.52, 1,008,728.64 and 223,418.88 is: 335,125.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,491.52 : 1,008,728.64 = 223,418.88 : x
  2. Step 2: Convert to fraction form
    672,491.52/1,008,728.64 = 223,418.88/x
  3. Step 3: Cross multiply
    672,491.52x = 1,008,728.64 × 223,418.88
  4. Step 4: Simplify right side
    672,491.52x = 225,369,022,972.72
  5. Step 5: Solve for x
    x = 225,369,022,972.72/672,491.52
  6. Step 6: Final answer
    x = 335,125.45

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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.