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Finding the Fourth Proportional to 653,137.76, 979,768.56 and 253,809.38

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Solution

The fourth proportional to 653,137.76, 979,768.56 and 253,809.38 is: 380,738.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,137.76 : 979,768.56 = 253,809.38 : x
  2. Step 2: Convert to fraction form
    653,137.76/979,768.56 = 253,809.38/x
  3. Step 3: Cross multiply
    653,137.76x = 979,768.56 × 253,809.38
  4. Step 4: Simplify right side
    653,137.76x = 248,674,450,757.09
  5. Step 5: Solve for x
    x = 248,674,450,757.09/653,137.76
  6. Step 6: Final answer
    x = 380,738.13

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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.