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Finding the Fourth Proportional to 653,235.28, 979,471.50 and 253,408.84

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Solution

The fourth proportional to 653,235.28, 979,471.50 and 253,408.84 is: 379,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,235.28 : 979,471.50 = 253,408.84 : x
  2. Step 2: Convert to fraction form
    653,235.28/979,471.50 = 253,408.84/x
  3. Step 3: Cross multiply
    653,235.28x = 979,471.50 × 253,408.84
  4. Step 4: Simplify right side
    653,235.28x = 248,206,736,628.06
  5. Step 5: Solve for x
    x = 248,206,736,628.06/653,235.28
  6. Step 6: Final answer
    x = 379,965.30

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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.